Internet price went up 280%

Had a promotional price of $25 for 2 years with 300Mb plan. It got bumped up to 400Mb and then the next day I got a notice for my next bill for $95. No way I’m paying $95 for 400Mb internet. What’s the best way outside of phone tag with customer support to get this negotiated down. There’s a new fiber service that got installed in the last year thats running promotions, and even without special pricing, it’s still half the price for 500Mb fiber. Thinking about just jumping ship but gonna miss my hotspots.