The newest scam is this: criminals place a call to a person requesting they call a number because of a problem such as a credit card breach. The person calls the given number which is a VOIP (voice over internet) phone number and is asked to enter in their account number, etc using the phone keys. VOIP phones can be set up to log phone key strokes and thus steal your information.
If you receive an email or phone call to call a particular number, don’t. Disconnect and call a known good telephone number and verify that indeed your account was breached.
Popular scams involve impersonating the IRS. If this is the case, report it to: IRS scam
Doug