Just tried to call them. They said a wait time of 2 hours. Didn't give me the option for a call back. They don't have that option?
It appears they do not offer it. I really have no idea as I have never flown them but not all airlines offer that option. Good luck.
Delta did not offer the call back option when I tried last week. 2-4 hour holds time, I tried their texting option, which was useless but I did get through quickly at 6:00am to a live person. AA did also offer the call back option.
