Why am I being told the mix & match unlimited plan won't work for my devices?


I would like to contact the corporate office as well. I've been a customer for 15 years and the misinformation and inability to help me has been incredible. It's been a huge waste of time and money. What is the phone or address of the corporate office? Maybe they can help me. The other night I was told the mix and match unlimited plan will not work for me with two phones, a jetpack and tablet. From what I've read, I believe this rep was wrong. Please help!