FNQ Roller Door Doctor

FNQ Roller Door Doctor replaced a motor on a roller door for my 89 year old mother late last year. I had bought 2 new remotes for the old motor to see if that fixed the problem. It didn't and I contacted FNQ Roller Door Doctor to inspect and rectify the problem. I was told the motor was stuffed, a new one was the only option. They came and installed and were paid $600 cash, they didn't leave a receipt/tax invoice. When they left the new remotes were taken from the dining table inside. I contacted them multiple times asking for the return of the remotes and to supply an invoice or receipt for warranty purposes with no joy. Next step is to contact police and report the theft of property from an 89 year old lady.