Blown Head Gasket

I've had the head gasket blown on me 3
days ago, it's a $2,200 repair, still owe a lot
of money on the car itself I'm kinda in a
tough situation because of the high
monthly payments, had so many problems
on a van I bought brand new, what should I
do? This van has starting to be unreliable
the last 2 and a half years