I bought a new phone on Friday. Was talked into a large tab. Had medium tab with old phone. I've figured it out and I'll be paying a lot more over the 2 years with large tab then if I pay out the $200 now. How do a go about switching back to a medium tab? Can I get my old plan back(not available anymore) since it's only been 3 days? Heading back to work up north on Wednesday so I need to get this figured out right away.