take a car in and get s**** back

took my car in for a cam belt"due for service" they then incorrectly installed my cam belt and broke the engine they replaced the engine and told me to collect my car on arravil the car was missing which they then replaced a spark plug and fuel injecters rack 'not new' driving my car home i relized that my car was reving at 2500rpm took the car back the following weekend they then changed the throttle body , the car was still reving at 2500rpm the following weeked they did a dogostic test and saw there was a valve they did not put in after installing the valve the revs seemed fine untill i relised that my car now was reving to low and jumping the weekend after they took the car to bosh and had to leave my car there but supp**** me with a car for the mean time then getting a msg the following week that my car is ready when i went to pick my car up they told me they took the car to ford and said it was my catalatic converter and they didnt touch it and did not take responsibility only relising later that it is there fault they installed a engine that was standing for awhile the dirt from that engine blew in to my catalatic converter my car now revs on idle at 1500rpm the fan belt that in my car now is 90% wors condition than what i had they ripped the wires out that make my 12v plugs work the aircon does not work anymore and the engine oil that in my car now is filthy i service my car regulary and never and such bad oil in the car these r guys that dont take responsibilty for there mistakes by braking my engine they kept trying to blame me such as'the engine broke from wear and tear'my car was perfect and i got s**** back