my husband is trying to take my car. his dad paid it off before i left. the title is in his name. they said if i dont return the car they are call

If you are married, then the car belongs to the marriage, regardless of whose name is on the title, and who paid for the car.   You both have equal rights to the car.   This is no way to live.   I suggest you consult with an attorney in the county where you live and discuss your options.  Good luck!