Order not delivered since November 30 2020 and not response from Mr Shopper

I bought a fridge on line on the 30th of November and to date I have not received it. I called in 2nd week of December but what you get it an automated message that you are number...... in the queue and then from there you are transferred to a phone that rings and rings and then it goes on to voicemail. I did this for 2 straight days to no avail. I then went on to their chat with a guy named "Craig" you see he is on line but never responds to any messages. From there onwards I have been sending emails on their provided emails, last Thursday and I was told they will respond to me in 8 hours, till today I got no response. I spoke to my bank that were supposed to help me with the reversal and after 10 days of waiting I was told that Mr Shopper instructs clients to log on a call via them for that.

Im very frustrated and getting nowhere with them as I want my money back and clearly they have a very bad client service center or they just dont care. I dont know what else to do.