IPod difficulties - repeated turning off & on?

With ipod difficulties, send it into apple repair. I don't know how long you have had it, but ipod's older than 4 years typically need to be replaced. If it is newer than that, then it may just have a defect and need to be replaced. There are so many possibilities to why it is acting up, if it doesn't go back to normal in a few days just take it to have it looked at.