Unused API models are reflected in the bill

My app is using unrelated billing models in its API key. Despite being a music app, it’s using display model pricing. This is really surprising. Where should I report this? My app only uses Gemini 2.5 Flash Lite and Gemini 2.5 Flash Preview TTS. Is this a joke? The pricing applies to Gemini 3Pro. The display is 4th generation (output).