Fly-N-Hi Total Performance Centers

After multiple times in the shop I was charged twice as much as I was told It would cost. Less then 100 miles after repair was done a belt broke that had just been installed which in return caused damage to my radiator. Now he wants to charge me for a radiator and labor and is saying its not his fault. Every time I've gone in for repairs I get charged more and it takes longer then it should. The last couple times I have had to return to get the same work done because it was done wrong.