MTN contract cancellation

How do you give minus stars?? Absolutely appalling experience cancelling my MTN contract with the cooling off period. The contract sim was received on 4 June, it didn’t activate amd wasn’t working so I sent a cancellation request on 8 June. This was finally processed six days later (which according to the agent is the period it takes to cancel a contract!) as a result, this put me out of the cooling off period and I was charged an amount with line item UNDEFINED on the cancellation contract. So in order to cancel a contract, you should do it on the day you get it before any BENEFITS are activated because it takes MTN six days to process something and that will ALWAYS put you out of the cooling off period.