Business ProfileforFlyUS Travels

On May 9, 2023 I purchased a flight from ****** ** to ***** ******** on the Flyus.com website. The flight was via TAP airlines, flight TP 212 on July 7, 2023 for the amount of $829.20. My Flyus.com booking reference number was 4EF8A4. I did not receive a seat reservation, so on 5/16/23 I disputed the charge through my ************* card for the amount charged by TAP airline: $829.20. During subsequent phone calls with Flyus I was told that my reservation would be honored if I cancelled the dispute, which I did on 5/19/23.Since that time, I have made endless phone calls to Flyus who repeatedly say they request the refund from TAP with no response. I have also called TAP many times and am told each time that since I made the initial reservation through Flyus they will not speak to me about the situation and suggest I call Flyus. It is over 9 months later and I never received a ticket on the flight, nor hav I received a refund. My call to Flyus today had the same result as every other call made to them: "wait for an email from us". I don't know what other recourse I have at this point to get my refund for a service I never received.I appreciate any help you are able to provide with this matter.Thank you