Telkoms terrible service

I make payment to telkom every month religiously this specific month i even done it on the 25/06/2018 and guess what telkom does. They go and ***** with my credit score and say the last time I paid them was 31/05/2018. Take note payment is due on the first of every month. And the worst part is the service I receive from them is absolutely **** running a 4 meg line and only able to get 400kbs sometimes. So i let them know that if they don't sort this issue out in 5 working days I will report this. Then well done according to them they sorted it out but on compuscan it is still showing I have a bad credit record. Then I get my invoice then they charge me R615.68 for a line moved in house. Now please note that this was from the flat to the main house and i have done this in the past moving from one flat to the other and there was no charge but now that they were meant to fix my credit score they charge me extra. And when you phone no one can help you. The one lady assured me that they would sort this out before I have to pay but up to today after I had to pay already I have not heard anything!