No service from "customer service"

I placed an order a few weeks ago, it was delivered however there were two items missing: they promised to refund me ( I'm still waiting for the refund) one of the items delivered was supposed to be fetched as I ordered it in error. They said they would send a courier to fetch it, I've been wanting for the courier since the 23rd September. I've called, emailed and no one seems interested in assisting me. I'm gatvol of the lies, I just want my money back and for them to come pick up the swing chair. It's so frustrating and disheartening to deal with ****s and people who have no clue how to treat customers. I've never been so disappointed in such a big company, especially because I've ordered from them before. The service has dropped.