My daughter was stuck in Peru during border closure. Booked a 4/1 return Cusco to DEN since quarantine was supposed to end 3/31. Got extended to 4/12 around 4/22. Delta advised 4/1 was cancelled and to modify flight...they were actually showing she could book 4/2, etc, etc etc. Annoying. Called and they said still shows flight leaving on 4/2. Applied for cancellation and got ticket voucher number for credit. Filled out form for refund demand after new rule. Cant get a person on phone. Are they just backed up or anybody have any insight.