They can but they are loosing profits as internet services swallow their market share. They won't do anything that expensive until they legally have to. The bes

They can but they are loosing profits as internet services swallow their market share. They won't do anything that expensive until they legally have to. The best way to fix this is to complain to your government. The tools exist https://en.m.wikipedia.org/wiki/STIR/SHAKEN https://en.m.wikipedia.org/wiki/STIR/SHAKEN