Cancellation of Contract 2nd Request log for same incident

Good Day. I just reviewed vodacom as they did not action my request to cancel with the instruction and proof of payment sent on th 23 May. Today I get an email advising this has been actioned one month later, Please note this cancellation was sent 23rd May and should be effective then and not 20 Jun as stated below From Vodacom. I wonder who is going to refund me for the hours i spent on this simple instruction "Hi Claudette Weber. We have received your request to convert *** to pre-paid. It has been logged and will take effect on 2024-06-20 14:00:02. Please note that any outstanding usage costs will be billed in the next month's billing cycle. We recommend you use any remaining minutes and data before this date as it will be lost during conversion to prepaid. For any queries, please call Cancellations on ***."