Autozone generally fucks me too. I always end up making 2 trips for one part. I walk in with the part or part number in my hand, they recommend substitute part #x and I come home to discover that part #x doesn't fit, isn't recommended, or is generally fucked.
Although, autozone still isn't as shitty as my new most hated company -- TICKETMASTER. They're like the mafia of ticket sales. Face value plus 60% more in fees, printing, tax, stadium rental, facilities, the bj that I will never get from them, etc.