Told to wait 4 months for a refund - sounds like a **** to me !

I paid for 4 air tickets in February 2020. Airlink changed the flight times due to Covid so I could no longer use them in October 2020 as I would have had to overnight in JHB so I had to make alternative plans to get to Kruger. I am now told I have to wait 4 months for a refund when they have had use of my money since February. They are blaming it on being short staffed. I do not buy it. They are being very aggressive in the market and opening up new routes all the time; instead I think they should be focusing on old and loyal customers and treating them with a bit more respect. They do not even have the curtesy of replying to emails either (other than the standard response of please wait for 4 months for a refund) - very disappointing.