Who called from 4168484194

Assuming a scam, as received a text asking to call this number with the comment "Credit Union"

I also think it is a scam, I received two text messages back-to-back saying to call this number. It had 1st of Gainesville in the comment section.

I got a recording about verifying a credit card I do not own - as if security had been violated.

Got a text message on my cell phone today.  It said "Call 4168484194 Credit Union".  I called the number and got a static recording saying something about my MasterCard. Then it told me to I enter my 16 digit MC number.  I didn't do it.  I figure it must be a scam.

Same here it's a scam !