Should my business use a WhatsApp chatbot? What it costs and what it can’t do

A WhatsApp chatbot is worth it if your customers message you on WhatsApp, a fair share of those messages arrive when you cannot answer, and a slow reply costs you the job. It is not worth it if you get a handful of messages a week, or if every enquiry needs a conversation with you before anything else can happen.

I call the one I build a WhatsApp Assistant rather than a chatbot, because it should behave like a good receptionist, not a machine pretending to be one. Whatever you call it, the questions below are the ones to answer before you pay for any of them.

What a WhatsApp chatbot actually does

A good one does four things. It replies within seconds, day or night, from a short file of your services, prices, areas and hours that you approve. It says in its first message that it is automated. It takes the details you need, one question at a time: name, what they need, where, and when to call back. Then it hands the job to you, with a summary on your phone within a minute and urgent enquiries flagged.

That is the whole job. It is not there to close sales or to be clever. It is there so the customer who messages at 21:47 gets an answer and a call-back time, instead of messaging your competitor.

What it costs

There are two costs: the assistant and the messages. The Lockhart WhatsApp Assistant is R14,500 (US$935) to set up and train on your business, then R2,450 (US$160) a month, month to month.

The messages are charged by Meta, which runs WhatsApp. From 1 October 2026, Meta charges in South Africa for replies too, about R0.12 for each reply to a customer. A business that answers 300 enquiries a month at three or four replies each would pay roughly R110 to R145 in Meta fees. I bill those at cost, with nothing added.

There is also an optional add-on that sends polite WhatsApp and email reminders on overdue invoices, at R4,500 (US$290) to set up and R750 (US$50) a month. It is not part of the assistant’s price.

What it should never do

Most of the damage a chatbot can do comes from letting it go too far. Mine follows written rules, and yours should too, whoever builds it.

It should never pretend to be a person. Customers forgive a machine that is honest about what it is. They do not forgive one that pretends.

It should never quote beyond your price list, offer a discount, or promise a date. Those decisions stay with you. If someone wants to negotiate, it takes their details and flags it to you as urgent.

It should never argue with an upset customer. It apologises once, takes the details and hands the conversation to you.

It should never invent an answer. If your file does not cover the question, it says so and passes the question to you word for word.

And it should never give legal, tax or financial advice, however it is asked.

What goes in the file

The file is the most important part of any assistant, and the part most often rushed. It is short, plain and approved by you: the services you offer and the ones you do not, your prices or price ranges, the areas you cover, your hours, how quickly you call back, and the questions you get asked most.

It also says what the assistant must hand over. Anyone asking for you by name. Anyone upset. Anyone who wants a discount or a firm date. Anything the file does not cover. Writing those rules down is usually the first time a business has agreed them at all, and that alone tends to improve how the team answers WhatsApps.

A realistic first month

Expect to read every transcript in the first few weeks. You will find questions the file did not cover and answers that need tightening, and each one gets added. By the end of the first month most businesses have a file that covers the large majority of what customers ask, and the summaries arrive without surprises.

Measure it simply: how many enquiries came in after hours, how many became a call-back, and how many of those became work. If the numbers do not justify the monthly fee, it is month to month, and you stop.

The practical catches

An assistant needs a number on WhatsApp’s business platform, and that number cannot also be used in the normal WhatsApp app on a phone. Most businesses give the assistant a new number, or move their main number and reply from a dashboard. Decide that before you start.

It needs a file to answer from. If your prices change every week, someone has to keep the file current, or it will answer from old prices.

And under POPIA, before it saves anyone’s details it should say so, and tell them they can ask for those details to be deleted.

Signs it is worth it, and signs it is not

It tends to pay for itself when most enquiries arrive on WhatsApp, many arrive after hours or while you are on site, the same few questions come up again and again, and one won job is worth far more than a month of the assistant.

It is usually not worth it when you get fewer than a few messages a day, when every enquiry is a complex, one-off project, or when you can reliably answer every message within the hour yourself.

A straight answer on timing: Lockhart runs its own assistant first, so the costs and answers are proven before you pay for one, and it is not installed for clients yet. You can read how it works and its rules now, and see the example conversation.

Start with your website

An assistant answers the customers who find you. Your website is usually where they find you first. The free Website Check scores your site out of 100, including how easily a customer can reach you on WhatsApp, and I email you the three fixes that matter most.

See what the Lockhart WhatsApp Assistant does, and its rules