I am writing to express my concern regarding an invoice I received today $30.59. I am on a usage-based subscription, and my invoice for February 9 was $9.30. I recently removed some of my projects, and I was surprised to receive an invoice for a higher amount.

I would appreciate it if you could investigate this matter and provide me with an explanation for the discrepancy. I have attached a copy of my previous invoice for your reference.

Thank you for your time and attention to this matter.