This is hard to say, when you have a small number of accounts, you will control your transaction number and the amount of money Fb holds when you contact support to request a refund, it will be refunded within 48 hours.
But when your trading volume is large, the number of holdings is terrible and it is impossible to control them all.
You need to scale up your ads, You will be given an unlimited spending account, a tax-free account, and no money holding. Please PM me