There's a nice little trick i learnt a few months ago and I have not received a single telemarketing call since then. When they call, answer the phone like you would at work, like say "Your Name Speaking", or "Company Name, Your Name". When they try your pitch, tell them this is a business office. In Canada, there's a law which states telemarketers must immediately remove your name from their marketing lists or they face a $5000.00 penalty for calling business lines.
You'd be surprised how fast they apologize and will never call you back. No 30 day remove hold BS. Works like a charm at my home. Why else do you think businesses never get telemarketers calling them
WG