Telkom ****ed My Credit with fault sitting with them for more 3 months

I'm very disappointed and ****ed off at Telkom for ****ing up my credit. I cancelled ADSL service with them on the 26th Sep 2018, and had to give a month notice because it was month to month arrangement. On 26th October 2018 services were finally cut off, but the billing I received was from the 9th October to 8th November 2018... I query on the 3rd Dec 2018 as I was about to make payment with Ref: ********** 8 that I am being over charged for days that I did not use telkom services. So the lady says she escalate to Accounts Dept to rectify... 3 months later on 14th March 2019 I receive an SMS saying "your case is resolved" Finally on the 11 April 2019 I receive the right invoice...

Now in the meantime while I was waiting for this case be resolved, Telkom writes me a bad credit because of the account is in arrears... I mean *** if the issue is sitting with you people. Plain disregard for other people. What you did is wrong, will never use your ****** services again