Incorrect/Damaged item - Replacement

I placed an order on the 24th Feb, received Saturday morning on the 26th, however one item which was a set of 4 pillows was 1. damaged and also only one pillow was received. Before the delivery guy left i asked him if there is more pillows and he said he only had just the one. Upon opening the pillow it was damaged and used , this was very unhygienic . I called and spoke to Carol whom assured me she will pick the order and get it replaced. It is now 6 days , and still no feedback no replacement of the item. I have followed up daily with the following people - Carol. M, Refoe.T, Sinotando P, Romano.D , Qaqamba.G and Nadia Dan - whom is the current person i am dealing with. All these people promised and assured that they have escalated the matter and it will be resolved, However all the promises as false and nothing has been done till now.

I am so disappointed with the service received and unable to understand why they are taking to long to fix and error which was made on their side.

Very unhappy