Vodafone's Unfair Price Hike on My Data Plan

I am the owner of the phone number 0534*****77. They told me that the price difference for the second term would only be 20–30 lira, but Vodafone is not keeping its word. But I only have one month left on my plan, and now they are charging me 295 lira for a package that used to cost only 200 lira. This is a big increase, and while I'd rather not switch plans, I can't pay an extra 95 lira for the same package without seeing any improvements. When they first sold me the plan, they told me that the most it could go up was between 20 and 30 lira. We can't let this go on. I really hope that Vodafone can figure out how to fix this problem and will treat their loyal customers with respect.