They didn't upgrade your plan, what they did was raise the speed of the plan you were on, call it something else. You had essential service, it was renamed to essential classic and upgraded to 150 MBPS, price remained the same. The STARTER tier was upgraded to 100mbps, and renamed Essential 100. Yours was simply renamed to essential classic to differentiate between it and the new essential 100. The pricing remained the same. Like I said, you probably were on a 1 or 2 year discounted rate plan, and it rolled off, which is why your pricing went up, the name of the plane and the extra speed had nothing to do with it.