Worst online customer service

I ordered a samsung A55 phone cover 15/10/2024 online. I paid etc. 16/10/2024..I recieved an email stating that it was being shipped. I have still not recieved it. I then sent an email to complain and I was told it would be delivered yesterday 22/10/2024 and that delivery never took place. An agent called me that morning saying they would escalate the issue but never got back to me. I sent an email to notify them that I have not recieved the cover and recieved an email today telling me that this has been escalated to their complaints department. Not a single call acknowledging my complaint and giving me an estimated time of arrival. This is by far the worst customer service. The least you can do is CALL..provide an explanation and either pay me back my money immediately or give me an estimated time of arrival. This is definitely the first and last time I use your services.