I just got a call from this number this morning, they left a message saying that there was suspicious activity on my card. I decided to check my account before calling my bank directly to verify their number. In the end there was a $100 charge to my account that I didn't make and it had been charged just this morning!!!

So it seems like this is a real number but I would always check your account and regardless of whether there is anything suspicious, call your bank to double check the number that called you before calling anyone claiming to be fraud prevention.

Totally useless. Told me the fraudulent transactions were AUTHORIZED!! Kangaroo Express in South Carolina--I'm in OREGON!!!  Told me I have to wait until banking hours on MONDAY to resolve this.
It's Saturday night and somebody is having fun on MY money clear across the country. Drained checking, transferred enough from my savings TO THE PENNY to drain both.

Said they were the Oregon State Credit Union calling about suspicious activity on  visa. Gave the above number to call back

I too was suspicious and called OSUFCU first.  They confirmed this is their debit card watchdog company.  They had caught 5 fraudulent transactions on my debit card.

yes an automated phone call came twice and asked for the last four digits of my social security # I hung up at that point. It seems like a scam. I'm calling the bank tomorrow.

OSU Federal Credit Union- This is the call back number for the "Verified by Visa" verification process. When a larger purchase is made they call you at the phone number the credit union has on file for you, in case someone has stolen your card or information.

When you call them back they take you through a short automated system to verify the recent purchase on the account.