Incorrect online order received and now it is MY problem! Where is the service please??

I placed an order online on your Edgars Black Friday specials. The incorrect items was delivered. I spoke to the online team and a collection and exchange arrangement was made. I then received a call from Vivienne ( ********** ) to tell me that Edgars will refund me. I told her I do not want a refund, I want the products that I ordered. She told me to go to an Edgars store then to exchange it. I went to 2 stores this weekend and they did not have stock. Both stores said that Edgars Online should collect the incorrect and deliver the correct items. I am done driving from branch to branch to fix YOUR mistake. Please can someone contact me to sort out this issue asap. I want the product that was advertised and which I ordered and paid for. It is not my fault that you delivered the incorrect items. Please can someone contact me urgently. Thank you.