And as for receiving I remember someone mentioning that a ringing phone is essentially someone saying "Speak to me now, speak to me now, speak to me now". It is an inherently rude form of communication because it demands instant attention with no regard to what you may be doing.
I just don't answer calls these days unless they are from family. I was getting a lot of sales calls from my electricity provider who also wanted to sell me gas. We don't have gas at our home, but they wouldn't log that fact. So I blocked their number.
Last week I got an email from them saying that they had been trying to call me for some time to let me know about an amazing offer, and that they think I may have accidentally blocked their number.
Of course, they couldn't just put the details of the offer in the email. I had to call them.