Returns nightmare

Annoyed, I'm beyond ANNOYED at this stage. Placed my order online 3 Jan, my order was delivered speedily on the 05 Jan. As a first time online Waltons user, I made a few errors and have been battling with having the wrong books returned. I was unable to log a return online (it kept giving an error), Used your website's contact us form (no response to date). Called Monday 15 - Spoke to Mateseko and to date, the incorrect order has not been collected. I have emailed SEVERAL TIMES and giving the address (in Waverley) they need to use for collection but to date nothing. Instead a driver arrived at the office in Sunninghill to collect at 14:00 and was annoyed and ****ed off with me because their office gave him the incorrect address. All I want is for my incorrect order to be collected and my refund issued. I have made another order with the correct books (which I hope will be delivered to the correct address) ASAP but for now I've been giving the run around and IT IS FRUSTRATING!!! Annoyed and irritated at lack of communication and assistance