Phone not working 4 weeks - I want a refund

Over the last 2 months I come to a point where I don't know why I am still using Telkom. I know they recently upgraded their ADSL lines in our area. Ever since the upgrade I have had continuous issues with the phone not working and and my Wifi dropping. I reported the issue once they came out to fix it but then my wifi kept dropping. I reported again ref 1765CRK230315 - no one came out but I got a message saying that my line was restored. I had a call from Telkom checking on the service and I told them again, how can you close a fault but my line was still not working. My wife even seen one of the guys on the road and he promised to come take a look at it but he never came. In total my line was down for about 4 weeks over the last 2 months. I pay my bills every month on time but I am paying for a service that is not working. I want a refund for the service that I haven't used!!! Telkom get you act in order else i'm switching to another supplier