Forced to pay for unrecieved goods

On the 04th of February I placed an order for 72 piece dinner set , On the 5th I called and cancelled the order and placed 60piece instead. The consultant I spoke to confirmed that the 72piece order was cancelled and that the 60piece was dispatched. <br> <br> Till thisday I have not received any goods from Home choice , to my suprise an invoice was sent on the 18th of February to start making monthly payments towards 2 orders ( 72piece & 60 piece dinner set) I havent received. It was dispatched according to them but I have not received anything.Starting from the 03 March 2015 , I am recieving 3 - 4 calls daily from Home choice requesting payment for 2 Items I have not confirmed / signed for and I have to explain to different agents and they promise to escalate the matter But i will still receive calls. On the 19 th of February I wrote a complaint email to them , till this day I have not had any feedback. Instead I get calls everyday from different consultants requesting for payment. I have to explain over and over that I have not received the goods & I have requested proof of a document I have signed indicating that I received the goods. I am afraid as this will affect my credit profile