FED UP CLIENT

I am currently having a terrible terrible experience with the accounts department at TFG. I paid up my account on the 29/09/2018 with their EDC (CSS) and received my paid up letter on the 03/09/2018 . I immediately forwarded it to their customer care, as per instruction from the call center, but they haven't as yet updated my ITC and by law it should be done within 5 days after receiving last payment/settlement amount. I need to use/apply for credit and they are delaying me although I have sent them countless emails and called countless times with my airtime to the pathetic assistance of their *********** call center who have the audacity to hang up my calls. I am really fed up and I want it resolved asap.