Awaiting refund for 15 months

Waiting for refund from December 2024. Been calling and sending emails for 15 months now joy. They keep promising, but no action. The customer care Supervior has been on lunch since 2024. The agents won't let you speak to their finance department. They cant give you a date of payment. Everytime you call, its a 15 day waiting period. They refuse to let me book a trip instead of the refund. So they hoping that I would just one day give up, then they can take my hard earned money. Refund booking no :STBF21V01