Afrihost billing me for a service they failed to set up!

Afrihost insists on billing me for a service they failed to provide. They have charged me and taken payment in advance for this service without even getting it to work! They have failed to set up my internet connectity, starting from Thursday 6th until Sunday 9th February. I have been on the phone and on WhatsApp with several of their agents throughout all 4 days and they were unable to get me connected. In the end I was asked to return the router. Frustrated by all this I therefore requested cancellation. Afrihost response was that their cancellation rules require 30 days and are therefore planning to charging a further month!! I requested them to reverse the charges, and they claim that my service was activated because there has been a usage of 72MB. This measly usage was the few MB where their agents tried to sort out the problem without success. I've been with Afrihost since 2022 and cannot believe being treated like this, so intend to leave them and move to another provider.