Frontier Airlines Frontier refuse to refund tickets of flights during COVID19 Denver Colorado

 Frontier Airlines played a nasty game to encourage people to cancel their reservation during COVID-19, knowing very well that their flights will be cancelled anyway. We had a flight in April that we couldn’t take due to the lockdown. I called them two weeks before the flight hoping that they will refund us the money since no one can fly due to the pandemic. They refused to refund us and stated that they can only give us a credit that we can use in the next 90 days. I then specifically asked what if restriction is still on by end of 90 days.. they assured me that they can extend the deadline. Guess what? We are approaching this deadline, they have no flights to offer to any of our destinations (in fact there are very limited destinations and dates available at all), and they refuse to refund or even extend the deadline for booking. 
They have the worst customer service I’ve ever seen with very rude employees. They knew all along that they will push people to cancel with an incentive of extra credit, that they can’t use anyway, while getting themselves off refunds due to their flight cancellation, so they can eventually steal the money.