Bad products

Bought a hisense UHD 48" tv from dion after a year and 2 months the tv gives up. The recipet is blur and cant see anything got a copy of bank statement and it clearly shows the purchase from dion wired with they reference now dion says they system has changed and the invoice is lost and hi sesne wont fix the tv without the invoice. Lucky for consumer protection i have given them the statement anf they said thats more than enough as a proof of purchase. I also started having problems with the hi sense fridge game sold me lucky i had the the invoice scanned