1998 Toyota Corolla heater core and coolant leak

1998 Toyota Corolla 4 cyl Automatic 119000 miles

so ive noticed that without the a.C. Or heat on the vents seem to be getting very hot. One day I get into my car and teh passenger side window is fogged up slightly and I smell antifreeze. Check the radiator and there is no antifreeze in there. So bring it to a mechanic he tells me it is the heating core, and it cost me 1300$.I get it back, the front passenger side is soaking wet with anti freeze, I dry it tehn drive the car around teh block and it is soaking wet again, so I get it towed there. They say that it was a a pocket that gets filled with water that they forgot to empty out. Ok so then I get the car back a 2nd time. Now I notice antifrreze leaking from near the water pump onto the street. Obviously I cant drive it and I have to take back again. Now its beeen almost a week that I have been without a car, and they arent open on the weekends so im gonna hav to wait another 3 days.I just wanna know if soemthing else is wrong am I going to have to pay for it? And is there a possibilty that they misdiagnosed the problem from teh start? If something else turns out to be wrong can I take them to court to get my money back cause I told them I wasnt going to fix the car if it was going to cost too much?