Payment error

Hi there,I am new to banker, but I am assuming this was an error:My students were given 3x the amount of pocket money in one day this week. They were all stoked and moved a lot of it to their savings. A few days later this money was taken out of their spendings account because it was clearly an error. Now they are all in unarranged over draft.Do these errors happen often?

Tessa Clarke