Stop spam calls

My mobile warned me "Suspected Spam" Called back the number on the landline and recorded msg was about a charity calling me that I had apparently donated to previously. As a rule, I do not trust anyone on the end of a phone any longer. This country has deteriorated at the rate of knots; it's a haven for scammers and we have no protection against them. I feel deeply sorry for any legit charity having their source of income taken away by the greedy and criminal elements of our society, which t