Worst after sales service, bad attitude!

I purchased a Hisense 55" UHD TV from Esquire on the 14th of March 2019. After a few days I noticed that the corners of the TV were darker than the rest of the display area. I logged a call with Hisense to send a technician to my premises and was in touch with them on the 28th and 29th of March. I was told that a technician would visit me on the 29th or 30th. I informed them that if a technician did not come then I would return the TV to Esquire.

The technician did not arrive. I returned the TV to Esquire on the 1st of April for a refund. They say that a credit has to be issued from Hisense. After a week of calling every day, I am waiting with no refund in sight.

I've called them again today, the warranties manager is not available.