I came to know from online customer care i am elligible for an offer “add a new line and other line on us”. So i went to store and received this offer. I did not realize the bill for longtime since I bought two devices also at the same time. Now its been more than 2years and my device plan is over and realized tmobile is charging me for both the lines . When i call customer care they said I am not eligible for that offer ? They never sent communication to me via calls or mails or any paper to me. I ended up paying them more than 700usd. I am sure i signed the papers in store so now what next how T-mobile is going to solve my issue ???