Mica Warranty & return policy

I bought a Ryobi polisher at Riverside Mica Vanderbijlpark on the 28th December 2020, as a gift for my son's birthday that was coming up on the 14th January 2021. Gave my son his gift on the 14th January, he tried it out for the first time on his car on the weekend (17th January). He had it working not even on full speed (6) he had it on speed 4 and not even 10 minutes into polishing his car the polishers motor burnt out. He returned it to Mica the next day 18th January where he has been informed that they will send the polisher for repairs and will get a quote for approval before they repair the polisher. I really don't understand this stance as all other business either exchange the product or refund your money. I'm totally disgusted with this store.