Supposedly sent from our bank about a small paypal debit, with instructions to click Yes or No

I got the same message as the others here, I called IMB to report it and they told me that it was legitimate, they do send this SMS out when they have suspicious activity. I gave them feedback that they might want to re-think this method of communication, as a few people had already reported them as a scam.

Caller: IMB Bank

Valid Anti Fraud/Scam service for IMB Bank, if you get a call or message it is legitimate.

Likely coincides with a payment or purchase you made, if it doesn't then look into that.

Caller: supposedly sent from our Bank IMB saying they detected a suspicious transaction on my credit card with a major retail store.

Our transaction was a legitimate purchase. but they asked us to answerer yes or no the same as the above persons issues .
it has got to be a scam.