I actually built a tool for exactly this problem — international calling to airline/hotel/bank call centers — after the Skype shutdown, and honestly out of my own frustration too. I'm originally from Poland, living in Melbourne, and calling family back home was never the issue (WhatsApp/Messenger covers that fine). It was calling Polish government institutions, or having them call me back, where things fell apart — no local number to give them.
Would love feedback from people here who make these kinds of calls regularly (airline/hotel/bank call centers), since you're exactly the use case I had in mind when building this.
It's called voxa - browser-based calling with local virtual numbers in different countries, so instead of calling BA's UK line or Aeroplan's Canada line at international rates, you're calling in at local rates, and you can also receive calls on that local number. No app install, no SIM swap, works from a laptop or phone browser.
Let me know what you guys think