A local TV news report discussed the problem of spam texts and phone calls to cell phones, where the callee often has to pay for them. Many people interviewed resented the intrusion of such calls and texts and their cost.
The news report said "it's hard for [users] to stop this on cell phones". (I don't know if that's true) They quoted the carriers as saying they will credit customers for such calls upon request.
(Not mentioned was how difficult it sometimes can be to reach a carrier's customer service to get such a credit.)
For myself, after receiving and billed for several unsolicited spam messages I had my carrier turn off texting, a feature I don't use. I can't help but wonder if the carriers and telephone network administrators could do more to stop spam and illegal solicitation calls. (It's also illegal to call a nursing home resident, but sales people would call my mother.)[public replies, please]