Business ProfileforFMB Chopper Parts

I bought an item from FMB CHOPPERS, aka ************************* ************** that was not made to the ***************************** that I requested, he agreed to make accordingly. Instead, ***** sent a standardized product from his website. The standard product will not work and it was not what I ordered, and ****************** shipped the item at his discretion. Multiple emails were exchanged, as I pointed out the problems with the order. ***** agreed there were two (2) mistakes he made. On Thursday, December 14, 2023, ***** sent an email that authorized a return stating:"Just ship them back (address) And I'll refund you in full."I mailed the item via ***** provided tracking by email, and waited for his response. ***** received the returned package in 4 DAYS, December 18th. Multiple attempts were made by phone, emails, and text for my refund; no response. ***** ignored the refund of $429.00. Keep in mind, it cost me $135.40 to ship the item back. Now I am out of $564.40 and no ownership of a product.I tried to be patience and diplomatic, but this makes no sense. What gives him the right to keep person money? This is horrible business practices, zero customer service, and completely ill-morale social policy. ***** fails to realize the frustration he inflicts on people ruining their days and disregard ownership of a motorcycle, which is why he is in business.I am even more furious that as a paying consumer in good faith to used ***** as a resource. I am beyond disappointed and outraged. Reading his Yelp reviews page, there are dozens of prior ****************** that have the exact same problem. All I wanted was a honest service. I didn't get that at all. ************************* is dishonest, and to take advantage for a financial gain & to ignore sending a refund is wrong. He stated "And I'll refund you in full" - then he must do so. As a merchant and owner of a business, if you cannot provide the correct product or service that was agreed on, then refund the customer money.