AT&T Retail Sales Associate interview questions

Drawn out and a waste of time. I've interviewed 4 times over the past 3 years with them and all they've ever done is waste my time. The processes have taken 3-4 weeks each time. Please tell me why they've called me in for 4 separate interviews only to waste my time and tell me I'm not "qualified" enough when I have 3 years of wireless sales experience. They review my resume each time before they call me in so they know what to expect as far as my qualifications go. Overall just a waste of time. Go work for Verizon or Sprint.