fuel inj pump and inj

I had my fuel pump rebuilt last May 2011 and brought it back 2 times because it did not run long would shut off and we could not get it restarted over and over again. I had the fuel inj's done as well, then this June 2012 it faild once again, they would not fix it with out charging me once again!! I spent over $1200 dollars the first time the 2nd time back they said nothing was wrong with it, the third time back I was charged over $400. and then 6 mo later my pump went bad and one inj was shot... They said it would not cost less then $800. to start.!! I sent the pump and inj to Willams Diesel in Ocala Fl and the job they did was BEAUTIFUL!!!!!!! the pump looked like it came off the shelf brand new!! wow ,,, I would never of thought it was mine it looked brand new.... and a good price as well.!! The people at Willams said that it didnt look like anything was done in it it look so bad !