I got a fitness card last month and refunded half of the balance fee. I am so angry! ! How to avoid the pit of prepaid consumption?

If you want to avoid it, don't spend on impulse, just like fitness. Don't be fooled into making money, think about whether you can persist. Or you can transfer the card second-hand at the beginning, and the loss should be smaller. In the future, I will make a one-time consumption without any pre-recharge.