Why your customer might not answer when you call them back

You missed a call this morning, so you phone the customer back an hour later from the number you always use. They don't answer. It's not necessarily that they've found someone else. It might just be that your number doesn't look familiar to them, and more South Africans than ever are letting unfamiliar numbers ring out.

The numbers behind it

Truecaller counted 17.47 billion spam calls in South Africa in the first half of 2026, up 25% on the same six months in 2025. Of the calls its app identifies as spam, only 7.8% now get answered, down from 10.2% a year before.

None of that is about your business. It's the whole country getting warier of the phone, and a warier country doesn't stop to check whether the unfamiliar number ringing is a scammer or a plumber calling back about a burst geyser. People just let it go, and it's getting worse every six months, not better.

What this does to "I'll just call them back"

Calling a customer back is still the right instinct. The problem is timing. If you're on site and you spot the missed call two or three hours later, you're now phoning that person from a number they don't have saved, hours after they first reached out, at exactly the moment they're least likely to pick up on instinct. The call that was supposed to close the loop looks, from their side, like one more number they don't recognise.

It's also not just consumer habits shifting. South Africa's National Consumer Commission is setting up a national opt-out registry for direct marketing, and marketers who ignore it face penalties of up to R1 million or 10% of their annual turnover, whichever is greater. That's aimed at cold callers and direct marketers, not at you phoning back a customer who contacted you first, so a genuine callback isn't at risk here. But it's another sign of where things are heading: an unannounced phone call from a number you don't know is losing trust in South Africa, on both sides of the law.

What actually helps

A few things make a real difference:

• Save the customer's number the moment they first contact you. It's a two-way problem. If your callback goes unanswered, at least make sure their return call to you doesn't suffer the same fate.
• Follow up on WhatsApp, not just a call. A message with your name and "hi, following up on your enquiry about the geyser" reads completely differently to a customer than a missed call from a stranger. This matches how people already prefer to be reached: a Mobile Ecosystem Forum survey of South African mobile users this year found WhatsApp now edges out phone calls as a way people choose to contact a company, 40% to 36%, with email still well out in front at 70%.
• Keep one number for the business, always. A number that's been calling and messaging the same customers for months has a history. A number that changes every time you get a new SIM looks exactly like the one-off numbers spam callers use.
• Close the gap. The sooner you get back to someone after their original call, the more obviously your number connects to the enquiry they just made. Wait a day and you're just another unknown number by the time you dial.

Where Hannah fits in

This is part of why we built Hannah to answer in the moment rather than leave you to call back later. She picks up the phone and the WhatsApp message when it comes in, so there's no gap for the customer to forget who they contacted or for your callback to arrive as a stranger's number hours afterwards. She takes down the job, and you get the details on WhatsApp within seconds, so you can follow up on the channel people already trust more than an unfamiliar call.

You can hear how she sounds on a real call on our receptionist page.