$200 Rewards Card Redemption EXPIRED?!! HORRIBLE Customer Service!

I had a HORRIBLE experience with AT&T today. Let me first say that I am a VERY loyal AT&T customer. I have been an AT&T wireless costumer for about 5 years and I am a U-Verse customer that is about to move her services to a new address. When I first signed up for AT&T Uverse back in February of this year I was told I was going to receive a $200 rebate/rewards card. Which I assumed was just going to be mailed to me. Nothing came. It wasnt until a couple of months ago when I received a reward notification for a $10 Visa Card, that I realized I had to redeem my card online. I NEVER received notification to redeem. In fact, I was never acknowledge as a bundled customer and had to call in to have my discounts manual entered EVERY MONTH until May 2013. This may be why I never received the Reward notification in the mail. I called AT&T today to try to fix this problem, and I was spoken to very rudely and was told it was too late to redeem my card. I was NEVER told how the rebate system works, I NEVER received award notification because I wasnt acknowledge in the billing system as a bundle customer until more than 3 months later, so how was this my fault? I even told the customer service rep that if I was going to be treated this rudely that I wouldnt move my services and would cancel all together, but she continued to rush me off the phone. I have NEVER been treated this way by an AT&T employee and it was VERY frustrating. I have always been an advocate for AT&T's great customer service and relationship skills, and this was VERY disappointing.