I use my mobile numner for all my personal communication. My wife insists on having a landline at home. I do not answer this line EVER since it is limited to telemarketers, survey calls, etc. In times past when I would answer the landline, I would do my best to upset, offend or aggressively intimidate agressive offensive callers. I'd regularly report that I was, in fact dead, dead. My favorite was the cold calls by investment advisors. I'd aggressively interrogate them about their own investments and portfolios, demanding to know the annualized rates of return, ta strategies they personally use, make them absolutely crazy with questions such as I assume you are fabuloulsy wealthy yourself using these investing principles you espouse..."
Usually I get them to hang up on me in frustration.
Good clean fun. Well deserved caller torture.