Cancelled services reinstated, now bound to a contract...

I have been using the Cellc Fixed LTe for just over a year now, and was tld we are going to move over to MTN. I cancelled the LTE service as we got Fibre in our area, and opted to go for fibre rather. also through axxess. I cancelled the LTE and received the mail to confirm. Now I was billed again for the CellC on a 20gb account, and now there is a MTN account as well. I cancelled the Cellc again, but when I wan to cancel the MTN, i need to pay in. They confirmed on mail, that when I cancel, it will not be renewed. Yet here I am. The lady from accounts was rather rude, and just dropped the call when she transferred me. I now cannot call in again as the line is congested.