Amazon Advertising Fees

Just a bit confused on an advertising fee i have received.

I have been on top of my PPC spending and made sure that i was always in profit each day with sales and my daily budgets. I received payment from Amazon (28.11.22) but when i checked my account on the 30.11.22 i noticed my account was -£300. That has since come down with sales each day.

I looked into my payments breakdown and saw that there was one for £600 for PPC fees. Just a bit confused where this figure has come from as i received payment and 2 days later i was down £300 but my daily budget is no where near that figure.

Any advice or help would be much appreciated