Cancellation Quotaion cannot be generated

After writing my 1st review, I received a call from a Vodacom representative. I honestly thought he was calling to resolve my issue but instead he called me to tell me that i am the one that keeps activating the 10G data every month and that's what the system shows. So I told him that I will not argue with him and that I would like a cancellation quotation...4 days later and still not quotation. Apparently there is a problem with generating a quotation on that specific number. The same number that I keep activating the 10G data on, the same number that has differently billing amounts every month. Now my question to him is, if it the system cannot generate a simple cancellation quotation on this number, what are the chances that the same system is messing with my billing or the activation and deactivation on this data? As i continue to wait for them to sort out this mess.