Poor Response to E-Mails and Call Centre.

On Monday 25 Jan 2016 I paid the amounts to cancel 3 contracts as well as the current bill via FNB Private Clients as an immediate clearance. This has been paid but Cell C appear to not have it recorded on their system even though I provided proof of payment to [Email Removed] Calling 084143 also didn't help as the staff don't appear to know what is going on. Numerous e-mails have not resolved the problem. All I want is confirmation that the payments were received and that no further debit orders will be made against my bank account. Is this too much to ask from Cell C? This is unacceptable and shows the lack of professionalism from the company.