Damaged goods and bad attitude . Unhelpful

Me and my husband bought an LG sound bar in 2016 of which we have returned it 3 times back to the store for the same problem . It has a 2 year warranty of which we are still wothin it . But the problems we have encountered with it + the store ar appolling . We nw are regulars af the store for complaining about the same issue and the manager by the returns section is very unhelpful and has a bad attitude known as (Pat Naidoo) how can we return the same thing 3 times? Does it make sense? And it so happened thaf when we were returnin it yhe second time there was a white male with the same issue but his was able to be exchanged immidiatly . Why are we so different when we have 1 and same issue. Why is makro ****** .is it the store or the employees at makro i dnt understand. We paid for the items but we dnt get to enjoy it as it is faulty all the time ... we did not buy it at an LG store but makro bt nw there telling us about LG representetives .what does that got to do with us . The service by the returns department is discussing and the worst ever . I want makro to take up this matter immidiatly and deal with it as soon ss they can .