Account Assure Unknown sent me a cancellation notice (for a program I never requested) which advises re-enrollment in their protective credit card insurance. omaha, Nebraska

 Account Assurance sent me a cancellation notice (for a program I never requested)  advising me to re-enroll in their protective credit card insurance program.   As I was doing my research,  I could not find one of my credit cards  which would even match up to the last 4 digits to the card in question.   They didn't really give much info on the Account Assurance memo...there was no website addy to refer to, no fax#, no name of a credit card that its supposed to be concerning and no entire acct # , only the last 4 digits of the acct # which didn't match up to any of my cards.  I researched it on the internet only to find that this is a valid scam.