I overcharged over 5000 people
Which people did you overcharge?
Old people, I was able to make it without much trouble.
Overcharing people is a sign of poor character and causes damage to many people. Try to make amends with the people you overcharged and see if you can find a way for them to forgive you so you both can move on.
They can forgive me but I promise that I will never do it again.
Sometimes its not enough to be sorry. You should try to make amends by paying back what you overcharged them for. That way they can get their money and things can be even.