Homechoice, really bad service.

I ordered goods from Homechoice and when I received the goods it was not the correct items. I sent the goods back via the post office on the 22 September 2014 from Van Dyk Park post office. It was collected on the 8 October 2014 by a person with ID number and stamped with a Homechoice stamp at the Kuilsriver Post office. We have confirmed with Homechoice that this ID number belongs to an employee of Homechoice. I have proof of collection from the post office and have emailed this proof to Homechoice. Homechoice is amendment that they have not received the goods back and have subsequently handed me over to lawyers for legal action.