Cancelation

I have been trying to cancel my contract with Mr Price mobile for 4 months, eventually had to cancel the debit order at my bank, then suddenly they called me to offer a new cell and upgrade my contract. They said I must pay arrears at Mr Price and they will send in a cancelation request, fortunately I asked for proof. I again sent cancelation to support@ mrpg. Com, well that email returned unspent. My ID is ***. Can ell this immediately please.