Worst customer service. No help

Absolute worst service. I received an SMS that my fibre was active when it wasn't even installed. Contacted them and was told that it would be sorted and I would be credited. More than a week later I reversed the debit order and got an email for demand of payment. No feedback yet on fibre that hasn't been installed. I have reported this issue three times and had to hold the whole day on their useless WhatsApp support.