Hi, check the statement.. before removing funds ? you can see " fiverr Added Funds " So the story is.
You have Purchases at fiverr. When bills are due then there is no funds available in your cleared wallet. so " fiverr added funds " and paid bills.. after your wallet fills with revenue. fiverr will remove the funds that spent on you for your bills like " Promotions, Seller Plus, etc "
hope this helps.
thanks