WORSE SERVICE / SELLING BROKEN TV TO CUSTOMERS AND REFUSE TO EXCHANGE.

I AM SO DEEPPLY DISAPPOINTED AT HI-FI CORPORATION IN N1 CITY MALL - MY RIGHTS AS A CONSUMER HAVE BEEN ABUSED, I HAVE BOUGHT A PLASMA 25/05/2019 40ICH SANSUI, THE TV IS NOT UP TO A MONTH BUT IT STARTED CHANGING CHANNELS AUTOMATICALLY WHEN MY HUSBAND RETURN THE TV TODAY H AS TOLD THAT THEY WILL RETURN IT TO THE FACTORY AND HE MUST COME BACK AFTER 21 DAYS - WHAT THE HELL ARE WE SUPPOSE TO WATCH NOW????? WHY ARE THEY REFUSING TO GIVE US A NEW TV ??? WHY WOULD THEY SELL PRODUCTS THAT ARE BROKEN TO CONSUMERS??????????? I WANT THIS NONSENSE TO BE DEALT WITH IMMEDIATELY BEFORE I REPORT YOU TO THE OMBUDSMEN