Business ProfileforAll-Phase Heating and Cooling

I am seeking assistance in getting a refund of $500 deposit for work that was not completed. **** ******* (All Phase Heating and Cooling) came to my house in early June 2022 to provide a quote for the installation of three heat pumps. He sent the quote via email on Jun 13 (costs written in an email - no detailed PDF or cancellation policy) and asked for a $500 deposit. He stated that he books up quickly before the winter and would need to send the deposit to secure a spot for installation. I agreed to what was discussed in the email and sent the $500 via e-transfer on Jun 29. We did not book an installation date at that time as we were waiting on approval for a ****** ******* ***** Loan. He kept in constant contact with us until I told him Nov 18 that we chose not to get the heat pumps installed. We did not hear anything back at that point so I requested the deposit to be sent back via e-transfer. Only at that time did he tell us that deposits are non-refundable. In early December, I sent out a letter formally requesting the deposit to be returned within 10 days of receipt of the letter. I sent it to the business address that he had previously provided and it was sent back as "return to sender". On Dec 23, I sent it to his home address as registered mail and required a signature for delivery. It was signed for on Dec 29 meaning that the deposit should have been returned by Jan 8. I allowed some additional time to the 10 days due to the holidays but have not heard from him. No contact or deposit has been received since the initial request in November 2022. Any assistance that you can offer in the return of the $500 deposit is much appreciated. Thank you.