I got an online payday loan in 2011 because I was in a fiance hardship. A few payments was taken out of my account, however, I closed the account due to not being able to make payment. Now I am getting phone calls stating if I pay within 24 hours my county police will be notified for further charges. I am going crazy with worry!!
If you you took out a loan, but did not pay it back, the lender will be able to sue you for the amount owed.
Can they bring a civil lawsuit, sure. If you borrowed money, didn't pay what you promised to pay; they now have a claim against you that can be enforced by a civil court.
Is non-payment of a debt criminal, no.