Took my product and money

I returned my microwave in September and took the same brand. I kept it in my cupboard only to open it on the 5th and found an old scratched microwave it was making a funny noise. I immediately put it back with all its plastics still not moved from the doors handles and glass. It took 3 days after it was picked up to get the status changed to concluded. They said they have sent me an email and there is nothing. I called and the phone was dropped. I’ve been sending emails and nothing.