I did not recognize the number, so I did not answer. They left no message. I have no time to spent listening to robo-pest-calls or pest-telemarketers. I agree with Me Too message, I never call back out of curiosity as other people wrongly do because "curiosity killed the cat".
So sick of these nuisance calls.They are so many scams going on at the moment.Almost all of the calls I am getting on my landlines are scamms,calling and disturbing me multiple times a day.Trying to block them is worthless,as they just hijack another number and call you back.Untill the government takes this seriously which will probably never happen as they don't care,vulnerable people will continue to be ripped off.