Although the available balance in the message preview wasn't enough, Li Lechen knew he definitely had more money left over. He had never worried about phone bills because normal calls and texts never exceeded his plan.

Besides, if my mom tops up my phone credit, it's always at least 300 yuan, which lasts for half a year. It's impossible for it to be 20 yuan.

Did someone make a mistake?

However, there is another possibility...

For a fleeting moment, Li Lechen felt he had misled someone. He had set his ringback tone to "mobile customer service feedback, call with voice" to minimize the chances of receiving harassing calls.

There's no way around it; personal information is being leaked so much these days. As a student, I'm constantly bombarded with calls from various training institutions asking if I want to take advanced classes, cram schools, or guaranteed pass courses. Even real estate agents, insurance agents, and stock market brokers are getting involved. For a while, I even received calls from liquor sellers.

But since using this ringback tone, the number of harassing calls has decreased significantly.

Therefore, the goal is to have a conversation.

However, a side effect is that I have to explain it to acquaintances. Especially when I first activated this ringback tone, my mom called, it rang twice and then I hung up, and then 300 yuan in phone credit was credited to my account.

It's possible that the person who topped up their phone with 20 yuan was an acquaintance.

How embarrassing!

But to my surprise, just as I was thinking of calling back to see who it was, the second notification of phone credit arrived.

I recharged another 20 yuan.