BAD SERVICE FROM SUPERSONIC

I signed up with Supersonic at an MTN store for fibre as my current router keeps bombing out. They said they would send the router through and someone would help me setting it up. This all happened on the 22nd Nov 2024 and eventually called them to say that no-one had been here to help me instal it so I cancelled my contract with them. However, they have been taking money from my ABSA account so I have put a stop order on this and told them to come and collect the router which I still have and too date, absolutely nobody has contacted me to find out what the problem is or to collect the router. In the mean time the first debit order went through and I could not reverse it as it was over R500.00. I am not interested in continuing with this and would like my money back as this router has not been operational at all. I have written to them many times with absolutely no response. MTN did try and ask me to connect the router but I just could not manage so decided to cancel the whole contract. I did get an email from Supersonic saying they were sorry I was cancelling as I needed confirmation to put a stop on any future debit orders going through. I have never had such bad service from Supersonic and the MTN store at Karaglen in Edenvale. Absolutely unacceptable and still waiting for them to pick up the router which has never been used.