Got the same message, my FNB account is being de-activated. I don't have FNB. The text came from this 585 number, but the callback number was a local 903 number. I'll pass.
Someone placed a text message to me that my Genesee Federal Credit Union account has been deactivated. I don't have a Genesee Federal Credit Union account! So I called Genesee FCU. They are being called by their customers that actually have accounts. They were surprised that I had received it since I don't have an account. They have no idea where the calls are coming from. Reverse directory claims it Cingular Wireless, llc. Apparently in Atlanta Ga. When I called their number it was a bank.