Joke Collection Website - Public benefit messages - Why did my postal currency card deduct the SMS fee twice this year?

Why did my postal currency card deduct the SMS fee twice this year?

How much did I deduct from you? Is it three yuan or thirty yuan? If it is three yuan, then you have a monthly subscription, which will be deducted every month; If it is 30 yuan, it will be a year, and it will be deducted once a year. Or you owe the SMS fee in your card before, but now you suddenly save money, and the SMS fee you owed before will be deducted.