Vodafone's Unfair Data Plan Change Left Me Stunned

A year ago, I called Vodafone to change to a postpaid plan. The Red 30GB Ultra package, which cost 177 TL, was the one I chose. During the call, I insisted on a 2-year contract, but they kept insisting on a 1-year deal. They told me that I could keep the same plan for another year for just 10 TL more when the contract was up. But today, I got a call from Vodafone customer service telling me that the new price for my plan would be around 290 TL. Can you believe how unfair this is? Can this even happen? I've had enough, so I want to cut the line. I don't want to wait even one more minute on hold with Vodafone.