[PaulJ]

No one has the right to call me without my concent

This is as untrue as no one has the right to ring your doorbell without your consent
As much as I dislike telemarketing calls, they are,for the most part, honest, working people just trying to make a living under very hostile working conditions. The five seconds it takes me to tell them I'm not interested is a small price to pay to keep them out of the welfare line.

[supercat]

This is as untrue as no one has the right to ring your doorbell without your consent

If you have a sign posted on your door reading "NO PEDDLERS OR SOLICITORS", then any peddler or solicitor who rings your doorbell is trespassing.