Um, okay if your alternator is "breaking down" that quickly after getting it replaced several times already...maybe you should be taking it to either a different Pepboys location or just somewhere else in general. I'm surprised a little light bulb didn't click on in your head after the second time. Whether you know about cars/trucks or not, come on! Something's not right here! They're ripping you off! I'm sorry but I don't understand how you could have fallen for this 3 times? I mean depending on what kind of vehicle you have the alternator is going to last a little longer than a year, come on do some research!
When it comes to having to pay for the labor even though you have a free lifetime warranty, who cares really!? That's how it always is. When you took the car back the second time did anyone bother asking you when you last had the alternator replaced/looked at? Something is going on at this location. I have nothing further to say to you except, MORON!