<human>: I took my 2001 Honda Civic into my local dealership last week because the AC was blowing warm air, they estimated it would be $500 to fix whatever was wrong, fine.  
I get a call later that day saying the radiator fan was also partially melted, and that they think that is why it isn't cooling properly, will be another $150 to replace.  
I say go ahead, and pay the $650.  
AC works fine for 2-3 days, then I have the same problem again, take it back in, and now they are saying the AC compressor and clutch look like they are failing, and I will need to pay $500 MORE in order to fix the AC.  
Why didn't they look at those pieces the first time around? My car is only worth about $2500, if i had knows it would cost around $1200 (HALF of my cars worth) to fix the AC I would have just said no and dealt with it.  
My question:  
Is there any way to get them to fix the AC without paying more, since i technically paid $650 to fix the ac, they just didn't fix the right parts?  
Is there a way I can make them give me a refund for not fixing the problem?  
Or should I chalk this up as a life lesson to never trust a dealership as far as I can throw them?

Give me the gist of the text in a nutshell
<bot>: paid $650 to fix ac, it stopped working 2-3 days later, dealership wants another $500 to fix it properly this time. What can I do?