I am pretty pissed about this. After being with AT&T for over 6 years, I just switched to T-Mobile on March 12th. When I asked about the 15% corporate discount, which many of my co-workers have been enjoying for some time, they looked it up at the store and confirmed it and scanned my ID and applied it to my account. They said it should show up by my 2nd bill.
Well, looks like that's never even going to happen for me! I transferred 5 lines (4 with ETF's to take advantage of their promo) and 15% would save me $21 off my monthly bill. Comparing to what I was paying with AT&T (which gave my company a 24% discount, albeit a more expensive overall plan), switching over to T-Mobile will now cost me slightly more per month! That 15% discount absolutely made a difference...they can keep their crappy $25 upgrade card. Especially now that I have to buy un-subsidized phones.
Maybe my timing for the switch was just coincidentally terrible, but they HAD to know that this change was right around the corner. I feel like I've been totally had by T-Mobile...not a great start to using them (maybe it will be very short lived).