Why do you deduct the mobile phone fee every day? I made 400 short messages in 20 miles, and got online for 5 yuan. Can I send a text message or get a rebate?

Here's the thing. You pack 20 packets of 400 text messages, and you will deduct a dime for sending one message until all of them are deducted in 20 yuan, which means that the first 200 text messages are a dime, and the last 200 text messages are free. Your five-yuan Internet access fee will be deducted 1.6 cents every day, which will be insufficient at the end of the month. I hope you can understand.