Extremely poor compentency and bad service of cancelation department

I have 2 contracts with Vodacom - in April I requested a quote to cancel the contract on nr ********** 224. I received the quote and paid the full amount of R2308.81 on the 11th of April. I was informed that the contract will still run until the end of April and then cancelation would be effective. At the end of April I noticed that only the amount for my two Vodaphone mobile contracts went of and not the amount for the other contract that I did not cancel. I queried and Vodacom notified my that my cancelation request was not put in place and they used the money that I paid for the cancelation was credited to my two contracts. I clearly instructed them that my ********** 224 nr needs to be cancelled and they need to take the credit back for the cancelation on which they advise me they will and would deduct then double at end of May for the other contract ( ********** 213) - this did not happen - at the end of May I saw the normal amount as if all contracts was still in place went of - on phoning now they confirmed that my contract was still not cancelled and that there is a credit and I will have the contract until the end of the month. THIS IS NOT ACCEPTABLE AS I CANCELED END OF APRIL and no authority was given to deduct for this number at the end of May. They only did the cancelation now (just received a sms) once again NOT ACCEPTABLE - I cancelled end of April already. on trying to communicate via email I was also told that we cannot as the emails don't work. The guy that helped me now told me it was not an error but under investigation since January which is completely unacceptable for a big company like Vodacom. I was also informed in April that although cancelling my contract my nr still will stay active as long as I load some airtime and use the phone on a monthly basis - this I will do but I want ALL credit and refunds to be done and cancelation with immediate affect - not take my credit that went of last month and tell my I have the benefit of the contract until the end of this month. I DONT NEED IT that is why I cancelled in April. Please sort this out immediately - extremely poor competency and service of the cancelation department staff