Refusing customers to port to their preferred providers

Cell C refusing me to move to Telkom!!! I have tried 7 times to port my number from CellC to Telkom and it always fail on Cell C side with ridiculous reasoning. Just now Telkom sent the request, I received the Cell C OTP at 12:08 and I rep**** immediately. I called Cell C and the consultant told me it has failed again because I failed to reply. FOUR HOURS HAS NOT LAPSED!!! HOW? HOW DID IT FAIL WITH THAT REASON? I rep**** at 12:08, just seconds after I received your OTP.