Appalling After Sales/Customer Service

I bought this Gaming Chair via Mark's online store and when they delivered it, it was damaged, incomplete (Parts missing) and some parts didn't even fit or piece together like they should. I logged a return(13/01/2025) via their website explaining what the problem is and they said they would pick it up the Thursday (16/01/2025) but they never did, not did I receive any communication as to why there was a delay. I've been in contact with their call center all week and everytime the agents just assures me that they will escalate the complaint and the supplier will be in contact. No one has been in contact all week and even the email I sent only got an automated reply and nothing more.

If this is how they treat their clients, I no longer want to be one of their. Because this is absolutely pathetic aftersales service. It seems like once they've received you money, they really don't care whether their clients are happy or not.