You cannot be arrested for owing a consumer debt — so an arrest threat means a scam or an illegal collector. Paste the message for a read.
No legitimate collector threatens jail or police over a consumer debt; it violates the FDCPA. Scammers use the fear to rush you into paying by gift card or wire.
Don't pay out of fear. Demand written validation, document the threat, and report it to the CFPB and your state attorney general.
No — there's no debtors' prison for consumer debts. Anyone threatening arrest over a debt is scamming you or breaking the law. Report it.