Unwanted landline calls, how to deal with

Hi all! My parents have started receiving promotional calls on their landlines, and they are very nervous about it. Please advise a company that can solve this problem. Thank you in advance.

Hello! After years of constant telemarketing calls disrupting family time, my parents finally found relief using a simple landline call blocker. I was advised to turn to block phone numbers on a landline. If unwanted calls are an annoyance, a basic call blocker can provide much-needed relief. This made my life much easier.