Message ssaid something about "my mastercard has been frozen for security purposes. If I want to unfreeze it press a number...."

Message stating that my mastercard has been locked for security reasons and to unlock proceed with entering a number and then entering account information.  No idea where this originates from or by who, but most likely a scam.  No other information could be found.

I just received a call also asked to press one to unlock my card then asked for my credit card number, but I didn't !!! It must be a scam to get my cc number!!! Don't answer!!!!

My husband just got a call from this number stating that there was a problem with his Security Service Federal Credit Union account.  This is a real credit union, but my husband does not have an account there.

I just got a call from this number saying it was SSFCU and I needed to press 1 to unlock my account. I hung up then...i  don't have an account with them and this number is a Michigan number and SSFCU is in Colorado and Texas. Plus, it's Sunday.