DANGEROUS SCAM - do NOT answer, Do NOT press 1, Do NOT call them back, You will NOT face any legal consequences for ignoring their obnoxious scary messages. They pretend to be calling from HMRC, Threatening you with immediate arrest for non-existent unpaid taxes unless they get an instant payment! They're persuasive, Aggressive criminals using fear tactics to extort money from vulnerable people and have already claimed a number of elderly victims.
Someone called saying that he was calling from HMRC Revenue and Customs and by their records I committed tax fraud, Etc., Not very convincing. I asked wether he would mind telling my name and address, He dropped the line...