Hisense terrible customer service

HISENSE has the worst Customer service that I've ever experienced ?♂️ almost a month ago my TV gave in, they sent technicians to my house to check the TV after I had to call time and time again, another story for another day. Then eventually my TV went in then I had to phone 4 - 5 times to find out what the status of the TV. Eventually they told me my TV cannot be repaired I need to take it back to the store and they will send a credit not to the store so I can get another TV, 3 weeks later which is today, I take the TV from JHB where I live to PTA where the store is to change my TV to come find there is no credit not. Then I phone the customer care to fine out whats going on, the person answered and said she will call me back she will send an email requesting my credit note, 15 mins later nothing, I call back the second person says they waiting for a report (bare in mind that I got a report 3 weeks ago, but they did not have a report, what a load of BS). When I ask to speak to their Manager they say I can't... Long story short, I had a **** service after spending R20k on a TV, I should have just added another R4k - R5k and got myself a Samsung ?♂️