Horrible customer service and messes up your credit score

Reason being that they have messed up my perfect credit score due to their own mistake, I emailed proof (zero response as usual) that there was money in my account as I do have an overdraft facility and phoned multiple times (which the vodacom employee having an attitude towards me) after they did not deduct the monthly premium and continued to penalize me with a fine and marked my credit score incorrect due to their own technical issue. When trying to cancel my contract the operator mohamed (terrible atitude)refused to listen to me and went on for 40min to not cancel???