53/c180 kompressor auto help!!!!!!!!

hi all,

looking for a genius to calm my nerves,

i have saved all my hard earned overtime to buy myself, wife and two kids a 53 plate mercedes c180 estate auto kompressor.i got a second hand one private and the guy seemed genuine, when i seen the car it was running smooth as a babys bottom, beuatiful to drive, one day later i noticed a chirpingnoise, read up about this and seen pulley bearing, so i booked it in to garage for next week. problem is that tonight the pulley has broke im pretty sure, the belt is off, the power steering has failed and there was coolant everywhere!!!!!! i am in total panic mode, i have worked so hard to get this car and am heartbroke this has havent so quickly after me buying.

can someone help me by letting me know how much damage this has caused and what will need to be done.

thanks guys.