HOW MUST I PAY FOR STUFF I RETURNED??????????

After my previous review of home choice I was called and told that everything is sorted out and resolved but still I receive calls on a daily basis saying that I need to make payment to avoid legal action. How do homechoice expect you to pay for items after they collected it? Everything was packed back into the box and checked by three different people to ensure all items is sent back as the quality was not as advertised. a month after home choice collected the package the calls started saying two or three items was not in the package and I need to pay for it. Why didn't the person who collected the package check everything is there? For all we know the items went missing if its really missing after it was collected from me. How is it my fault that items is missing if they signed for the package? I would like a letter stating that everything has been resolved like I was told over the phone.