Passing the buck

I was sent a letter of demand for a contract I had cancelled a year ago, for a contract I cancelled a day after signing up. I held a contract previously that was behind and I undertook to have a new contract of a month to month basis with a gentleman named Deon but then I cancelled the new contract literally the following day as I would be relocating to another province. And now they want me to pay the remainder of the new contract in full a year later and because Deon is no longer in their employment they are passing the buck and neglecting to give me concrete answers. I would understand if they want me to pay the old contract's cancellation fees but to want me to pay for the old contract and the new alleged contract in full plus penalties is ludicrous. Did nobody bother following up at least a year ago for clarity ?They create issues but one cannot appeal because the phones are never answered by the relevant people, so & so is never available and they never return calls. Wendy called me and promised to ask Renèe to call me, Sive and Shandelay(something) at reception took my number 6 times promising to call me back, not once did they. Bad customer experience.