A Team Appliance Repair

This company came up in a pop-up ad when I googled a company that had been recommended to me. The technician came, looked at our fridge that was making a loud noise and assured me that it was an easy repair that he would do for $300. When we agreed, and I had signed his form, he asked for the money up front and only cash or debit. I foolishly paid $300 plus tax on debit and he went to work. 20 minutes later, he told me that he actually couldn't fix it without replacing a much larger more expensive part for $1,000. It was a small, older fridge and I said that I could pretty much buy a new one for that amount. He assured me a new one would be $2000 plus. (Not true as have since bought a new, similar one for $1100. I asked him to put it back together, he left several broken pieces of styrofoam and crammed it back together in about 4 minutes. I requested a refund of a part of the payment I had made since he didn't fix it as promised and was only there for 30 minutes. He said I would have to call the office. He suggested that I call the number on the form I signed. It was an unassigned number. I tried the "local" number where I had reached them first, it was busy. Meantime, my son looked up the company and saw so many reviewers with a similar experience. I called the Toronto area office and was basically told "too bad". I did not sign to say that I was satisfied, but there appears to be no recourse. It was an expensive lesson!