Cancelation not activated

I cancelled our Business Contract on 26 Feb per e-mail (you can't do it telephonically) with all relevant documentation attached. I received confirmation per e-mail back that they have received the documentation. <br> This line was never cancelled. I phoned again and again. Every time I get a customer service agent that says \Eish angasi"and then they try and put me through to another department and then you get cut off. I have e-mailed time and again. Was on phone this morning from 09:15. It is now 10:58. I eventually got a reference number from a Rachel at new services that helped me to try and cancel after I had an absolute meltdown on the phone. I am now on hold with billing to try and dispute the billing as they will only cancel (hopefully) from next month. I need them to back date from end of March as per my 30day notice on 26 Feb.<br> You can apply for new service telephonically"