Spoiling my credit record and blaming the bureau - ignoring bureau dispute

Good day, Please assist with correcting my TransUnion credit profile, as it is being updated every month to reflect that I am in arrears, despite the fact that I make my payments every month. My profile currently reflects 60 days in arrears for May, which is incorrect. I have already lodged a dispute with TransUnion; however, Cell C has not responded to the dispute. Kindly investigate and ensure that my credit profile is accurately updated to reflect my payment history and that I am not in arrears. Should this matter not be resolved, I will have no option but to escalate the matter to the relevant Ombud and the NCR. I trust this will receive your urgent attention. Regards