Turkcell Offered No Affordable Alternative to My Expensive Plan

I have been using a Turkcell mobile package and until recently I was paying 300 TL per month. For the same package, the price has now been increased to 600 TL, which I find to be an excessive and unfair increase. My current commitment ends on 9 October, and just a few days before this date I was informed that the most suitable package offered to me would now be 600 TL. When I contacted Turkcell, I was told that this was the most suitable option, and no more reasonable alternative was presented. I am not against a reasonable price update, but a doubling of the fee within one period is not acceptable to me. I request that Turkcell apply a fair and reasonable price increase and offer me a package at a more balanced price instead of doubling the fee in this way.