I have a voucher from a cancelled flight on JetBlue stuck in the abyss of their computer systems. In order to use it I've been told I have to call, but the wait

I have a voucher from a cancelled flight on JetBlue stuck in the abyss of their computer systems. In order to use it I've been told I have to call, but the wait times are hours long. I can use their text message interface on iOS to get someone to call me back instead of waiting on hold (which is nice), but the couple times I've tried there's been some ridiculous problem with actually using the voucher: They can't find it. Or I need some confirmation number that is different from the one they gave me that I swear doesn't exist. Or they can't transfer the credit into my actual account so I can book a flight on my own. It expires in a couple weeks from today and I just assume I'm never going to use it. I'm also always going to avoid JetBlue in the future. They don't even advertise prices that include carry on bags anymore, you have to pay extra to bring a change of clothes with you.