Signed up for 2 gig but only get 1.2 gig

I don't understand why I signed up for the 2 gig Internet but now it shows I'm on the 1.2 gig plan and I haven't been able to get 2 gig speed except on the day it was installed. Now it's maxing out at 1.2 gig speed. And my plan is showing as 1.2 gig. Feels like a bait and switch.