CONTRACT CANCELLED BUT STILL BEING BILLED

My contract expiry was on 16 March 2016, and I called through in Feb 2016 to place the cancellation ref ***. I was told that the last invoice/debit was going to be end of March 2016. Yesterday I received another bill from Vodacom, when I called through today they couldn't even ref my previous ref number. My new ref number *** where I am told that the end of April will now be the last debit. I wont be surprised when I receive another bill in May. Jack up your processes Vodacom!!!