Key point: I can speak, others say: when you apply for submission, there is a hint that college students cannot apply. You are paralyzed by such a sentence, don't try to retire early, IQ problem.
Precautions:
1: First of all, we should know the platform information, where it is and what department it belongs to. Don't stick to 12378 for one day.
2. Check all the bills of the corresponding platform by phone or by yourself, and then calculate the expenses except the principal. I repeat, the expenses here refer to all the money except the principal.
3. Communicate straight to the point, hit the nail on the head, don't whine for a long time and you don't know what to say, directly explain your demands, and then deduct the reasons. Both sides make sense. He has 1000 reasons to evade responsibility for himself. As long as you have a reason, it is enough. As for other skills, think for yourself.