Will car be able to start if the jumper cabels got put on backwards?

My car has been dying off lately. It shakes really
hard after I go to put my foot on the brake and
push the start ignition switch button, almost two
hours ago , some guy tried to give us a just with his
jumper cabels and put them on backwards, MY
CAR WONT START NOW!! I have almost got
rammed in to by huge diesels,  buses, trucks so
many times, I already lost count on the freeway or
even driving in the regular streets because of my
car dying off so much? We bought this Honda off
someone on facebook , he made it seem like the
car was perfect,  and that his asking price is
completely fair , so he would not go lower than
3500$ , I cant believe,  how dirty this guy did me ,
me and my fiance gave him all the money we had
while he knew the whole time exactly what he was
about to do , I'm literally stranded right now with
my fiance and this car wo t start for nothing , we
dont have money to tow it , I wish I could sew him ,
but he went ghost on us , os this car fixable at all??
Or is there anyway where I can buy a decently
priced and okay working battery I can buy
somewhere?? I need help so bad , I payed way too
much money for this car to just junk it , I feel like
crying , but I'm trying to have faith that theres a
way to save and fix my car , somehow I can
possibly afford, please anyone I need some advice