Anyone knows of an alternative to Skype to make free calls to 1-800 numbers? I was keeping Skype in my back pocket during trips abroad for that exact reason (allowed me to get away with using data only eSIMs and still be able to call bank/airline if something happens).
This. And most importantly for me, Skype allowed to call using my numbers (for bank it will look like i am calling from my cell). Any other voip service would just put random number which will trigger additional security checks.
My banks mobile app has a Call Helpdesk button, which simply dials the support number with ',,,<long random number>' appended. That gets you into the fast-track queue and they don't need to ask any security questions as they know it's you. They don't look at the dialing number at all.
Another option you could look into is a mobile VoIP app like Acrobits Softphone or Groundwire with a VoIP SIP provider like voip.ms. The apps are a one-time purchase (~$6.99-9.99 last time I checked). Toll-free calls are free and the airtime from voip.ms is incredibly cheap (local calls start at $0.01/min).