You would use this when talking about something that happened or said in the past. Such as.... He was told not to do it but he did anyway. He was told to go for it!! She was told that he was no good. Hope this helps :-)

Yes, it's past simple passive. If you want to know whether something is continuous or not, look for an -ing.

it's passive form , yes it's possible to say that: when the person who does the action is not important.