Nothing on their facebook page is more current than 05/04/2021. There is an office and fax number available on their main website page. Go back to the page that you made the payment through, read the small print. Find out about refunds, this might get you to the person or division of Trailhead Graphics you want. If nothing else works, look for the name of the webmaster for the site. This person may be able to provide a contact for TG. You could also stop payment, that might get their attention. You could trace your payment and find out where it was sent to, when it was received and by whom. Just some thoughts.
--BBF