Mr price customer service sucks!

I bought stuff on my account in March it was taking very long to arrive and I phoned customer care to find out what is going on they then cancelled the order without me giving consent. Since then they can't find it I didn't order it I had insufficient funds but how do I have a order number? I have spoken to mutable people and no one can help I have stoped paying the exact amount that the order was but still remain paying my monthly bill. They are very quick to phone you for the outstanding money and when you tell them that that is the reason they say they will take it up with there Manger /supervisor /supurior and nothing happens one told me she will put it down for a date after I said no and explained my reasons then I get sms saying I promise to pay by this date I did not agree to any date! I can't get any answers from anyone keep getting sent to people left and right that don't answer you at all, it's been months now and it's ridiculous!