Well, that doesn't help you any. Why would they not believe you? I don't understand that.

Do you often bring your work issues to your job developer, explain the situation you face, and ask for his/her advice on how to do better? In other words, do you think your job developer is helpful or unhelpful to you in general?

It doesn't help you in any in this case that they didn't believe you. They should take your word for it.