Complaint Review: Norwegian Airlines

I am having a real problem with Norwegian Airlines. I bought a ticket from them 18 or so months ago ($942) from Florida to Gatwick. With the pandemic I agreed to a voucher/credit  (same as I did with SAA - I was persuaded that this was the best option, as I still had my ticket, and wouldn't have to book again)

I wish I had have took the money and run! (Or should that be ‘flew’ !) But no, I trusted them! Anyway, now they have stopped providing me with the service originally offered, as they have stopped all flights from USA to UK

They are sitting on my $942 I simply want a full refund. They refuse. My question to you is..... How many thousands of other people are in the same 'boat' (or should that be plane?!!)

Please help

Regards,

Paul A Gibbons