Complaining of poor quality accessories we buy from American Swiss

Last year June I bought rings and watches at American Swiss. On September last year my ring was shapeless and the two gold steels on the ring we're about to worn-out from the ring. I returned the ring and they charged me R879.75 and i feel I was unfairly charged because the ring was still under their 6 months warranty. I took the ring on November last year. Currently the ring is having the same problem and on friday (05/03/2021) I returned the ring to Burgersfort American Swiss and they said they wanna charge me again for the repairs. Within a period of a year I'm paying extra expenses..... Please assist!