Urgent Billing Issue: Request to Refund Annual Charge and Switch to Monthly Plan

Hi team, I urgently need help with a billing issue. I was just charged €515 for the annual Pro plan, but I only intended to subscribe monthly. This has left me without funds. I’ve already emailed support@lindy.ai with my account details brendanfuller2010@gmail.com and screenshots, but I need urgent assistance. Could you please: 1. Refund the annual charge, and 2. Switch me to monthly billing instead? Thank you so much for helping me quickly with this.