Charge me yet you cancel my service??

hi<br> <br> I have been struggling to set up my wifi on my Share link device. numerous calls to MTN with no help, I decided to leave it for a while and set it up when I had time. only to find out that you have cancelled my service yet you have been charging me for it all these months? how is that ethical? <br> <br> I have to apparently now RICA my sim which is inconvenience on my side, you have all my details. just reconnect me. <br> <br> or give me my money back. stop my debit order and I can easily move my business to another company. <br> <br> Your choice MTN