Wrong item delivered

Absolutely pathetic service and call centre agents. Wrong item deliverd.....worth double the price of item I ordered....phoned call centre and told them wrong item delivered and that I need the item I ordered...Thursday. I was sent on my way with a lott of promises of they will contact me and email me and do everything in their power to help me get the product I ordered. Made it clear to them that I needed the product by the next Thursday. According to agent I had to follow the exchange and return process...whereby the item gets collected eventually without any paperwork or arrangement or communication from agents 19h00 at night the next week Tuesday...I phoned every day from Thursday to Tuesday and everytime I was told it is in progress. I wanted them to just send me the item I ordered and collect the incorrect item at the same time....a swap but that was not possible because the first had to investigate what went wrong before they attend to sending me the item I ordered. Eventually I stopped phoning the call centre because I realised it would not make a difference. In the end they reimbursed me on the Friday the week after they first delivered the wrong item...not once did they send me and email or phoned me. Some person decided that I do not deserve the item I ordered and payed for...and gave me back my money. This item was in stock and it also went on special during this time. All I want is the item I ordered.