Wow. I was wondering why people were fussing about the odd spam call! The most I have had is 2 in a day and my number is in websites, social media, whatever.

Almost all spam is instantly recognisable. Mostly visa and parcel delivery scams.

In do not block unknown numbers because lots of organisations use them here (UK) This includes people I really do want to be able to contact me if they want to such as the police.