True its a clear lack of efforts to the point he didnt even teach you how to write posts.
If its as you said and you made many mistakes, than what was your dom doing when you first made a mistake.
Just as subzzzero said its time to reconsider what is your relationship is?
For your own safety its best to temp. Close the thread, as in the view of other kinky people you can do anything from clamping your nipples to rubbing salt and pepper after you grind your tits with shap edge of a knife.
Good luck and take care.