at&t prev. Pacific Bell Offer discounts and rebates to get you to be a customer then never follow through. Internet, California

In September I contacted At&t to inquire about their services and rates.  I did the online chat since it was after business hours.  I chatted with a "Pamela" who answered all my questions.  I had a lot since I knew what kind of service I was looking for and understood the definition of "promotional rates"....She offered me several rebates, discounts, and unbeatable low prices.  She offered me $100 "from her side"...that i never got....Good think I cut and pasted our entire conversation in case this happend....and when i got the first bill it was outrageous to say the least.  So I called them and explained it all to them...They gave me a bunch of B.S.! Basically excuses and made me pay.  I asked to speak to a manager but got a bunch of excuses for that too.  Ultimately I just ended up paying the dayum bill and will be cancelling them shortly.  Their service sucks and they make a bunch of empty promises!