Nano Hearing Aids Will not honor refund policy. Product had 45 day money back guarantee. Returned product in 45 day window Las Vegas Nevada

Ordered Nano Hearing Aids online June 26,2022.  Product did not work as advertised. Contacted company and told them I wanted to return and get my money back. Company sent me a return number RMA 24395154.  Sent product back Priority mail and insured on August 8,2022. Company received product back according to USPS on August 10,2022. This was within the 45 day guarantee window. Company sent e-mail promising a quick refund. Several more e-mails to the company were answered always by a different person asking me to be patient. Recieved an e-mail stating my refund would be sent within 3-5 business days. I waited 2 weeks and still no refund. Sent another inquiry asking where my refund was. The answer was again be patient. Whaat a bunch of liars, they make promises they don't intend to keep.  Do not do business with this company under any circumstances.