I do this, but the operators get quite rude that I won't give my details right then and now. Afterwards getting back on to the original operator is almost impos

I do this, but the operators get quite rude that I won't give my details right then and now. Afterwards getting back on to the original operator is almost impossible and I have to spend 30 minutes on hold, and department swapping, trying to find someone who knows why they were originally calling me. Banks, and the like, need a system where you can call their (verifiable) number, and then enter a unique code that connects you back to the original operator that was calling you. It shouldn't be this hard to be safe. Especially when they continually preach to us about phone scams that we should be wary of.