Quick to take funds but not to act on client instructions

This is the last straw where it is easy to debit a customers account however you cannot act on a simple instruction submitted twice and again by your own agent from inside a store. I requested as per the required online document to be completed on 16 March that my combo subscription be cancelled and again in April, where after 2 smaller debit orders were deducted. I then went to the nearest store and the agent escalated the matter to ensure the contract is cancelled and the debit orders are refunded. AGAIN another debit order was deducted end of May and i again asked the assistance of the in store agent who was more than willing to assist. this morning however i get ANOTHER statement!! please cancel this contract with immediate effect and refund the debit orders deducted after cancellation request for the 3 months.