Upgrade Gone Wrong

Terrible service :-( When I did my "upgrade" in August, I had a package with 1000 minutes and 10G data with SMSs. I have been moved to a package with half the minutes and no data and no SMS's, but I am paying more! This is not the "upgrade" I wanted or needed. And no one can help me fix this. I have called in multiple times. When you speak to someone who says they will sort it out and call back, they never call back. When you call in, they just want to add bundles on top of what you are already paying.