Poor service

I bought 3 Gas stove at Game in Gateway, upon pick up I noticed that one of the stoves the box was open, I immediately brought it to their attention, I wrote it down and asked them to make a copy of that. They told me not to worry if there's anything wrong I can bring it back and get my money back or another one. Upon installation they found that one of the plates doesn't come on, on the same stove that was found open.I took it back to Game at Gateway, they refused to exchange it and told me that they will send someone to inspect it on Friday 2024/10/18 before they can make a decision. The stove was never used it was only installed and we found that it's faulty. They verified the COC for the installer and found to be legit so now all these delays are causing inconvenience to me, I am already loosing money hence I'm waiting for this stove to be replaced.