I'm in the same boat -- purchased two iPad Airs on launch day at T-Mobile store, was assured deal was legit and I could take advantage of 0% financing and get the free 200mb/month, etc. There was a hiccup getting me on the correct plan at the store, and I was told I had been put on a 500mb/month plan temporarily but that I would incur no charges related to it. I was told to watch for a text message from T-Mobile with a link to switch to the correct 200mb/month plan. I left the store and thought all was well.
About 20 minutes after I left the store, the sales rep I worked with called my on my cell phone and told me he had been able to switch me to the proper plan and that everything was set. I was able to use the iPad over the T-Mobile network, and still thought all was well.
A few days later (around Nov. 5) I logged into the website to get my account set up and noticed the $10/month plan listed on each line, although it showed $0 due. I called the sales rep and he assured me this charge had been credited back, which was consistent with what I read on here. He further stated that no taxes would be due because the credit "wiped those out." Again, I thought all was well, and that T-Mobile was honoring the deal I purchased under.
About a week later (around Nov. 12) I received an email that my T-Mobile statement was ready. I logged into the website and saw that I owed $24, which accounted for the two iPad Airs I had purchased, each on the $10/month plan, plus a pro-rated charge for the first three days of November. (Apparently they put me on a bill cycle on the 4th of the month.) I called my sales rep again but he was off that day. The person I spoke with at the store seemed ignorant of the situation, and said I would need to talk to my rep. I emailed my sales rep and repeated the details of our prior conversations and asked him to please confirm and issue the appropriate credit. I also called the T-Mobile 800 number and got a helpful rep who told me the same thing -- the full amount, including the $10 for both iPads, plus the pro-rated amounts would be credited back each month and that it just takes a few days for that credit to hit after the bill drops. She encouraged me to call back if it had not shown up in a week. (I had until the end of Nov. before the bill was due.)
Sure enough, the next day I logged in and it showed $0 due -- apparently the credits had been applied. However, later that evening I received an email from my sales rep telling me that the best he could do would be to offer the credit for 6 months, and that I could just pay it off in 6 months and then have the free 200mb/month going forward as it would no longer be financed. This was the first time I had been told anything other than that the original deal would be honored. I was not happy.
I responded that this 6 month offer was not acceptable, and reiterated the details of our prior conversations. I told him this was not the deal we agreed to. He responded very apologetically that he had done all he could and that if I needed to return the devices for a full refund he understood.
Like some of you, I already sold my two iPad 2s after I purchased these two iPad Airs from T-Mobile. I now have two conflicting messages coming from T-Mobile, but I'm afraid -- based on what my rep told me and based on what I'm reading here -- that I may have gotten lucky this month, and may even for a few more months, but that eventually they will stop issuing the monthly credits. I'm currently debating whether to return and go back to wifi only.
