Oil change service near Miramar, FL

I found Japanese Auto Care on Angie's List and went to them because of the great reviews, and of course because my sister and I both needed major repairs done on our vehicles. One is a Toyota Camry and the other is an old Ford Explorer. The Camry had (still has) an oil leak and the Explorer was (still is) stalling, overheating, leaking A/C, and shaking when the brakes are applied. So that's us in a nutshell. As for the folks at Japanese Auto, they are a father-son team with other mechanics in their employ. I will say that they seemed quite personable both on the phone and in person. Unfortunately, based on the odd and incorrect things they've said to us, they don't seem to know vehicles at all, or are playing dumb to con their customers...but I'm guessing it's the latter rather than the former. Here's an example: the son told me the tires on my Ford were old and needed to be replaced - except that I know that I have nearly BRAND NEW Michelins on there, so??? So when my sister noticed that her Camry CONTINUED to indicate an oil leak AFTER Japanese Auto charged her $1,344.47 for "fixing" it, she had two mechanics at another auto place confirm what she suspected. She went back to Japanese Auto because she thought the nature of the repair may have been complicated and that they had just made a mistake - well trusting them was her mistake. The son actually seemed confused by her request to rectify the issue, and after having her vehicle "checked" (whether they even took a sideways glance at it is questionable) for THE SECOND TIME, came back with the claim that the radiator suddenly needed to be replaced, so they charged her ANOTHER $335.77(?!) and said nothing of oil leak until she made repeated inquiries. Now how is it they missed the radiator problem THE FIRST TIME? The simple answer is that they are making things up. As for my Ford, when I realized that it is in the exact condition NOW as it was in BEFORE I went to Japanese Auto, I refused to take it back to them