It can be tough when you have to face the wrath of a mean person. But such things happen. So we need to be prepared. They will use the following techniques :
1. Asssign zero value to you
2. Use deregotary language
3. Will attempt to make you feel useless
Using this approach they are waiting for one of two reactions
1. Full upfront confrontation
2. Full defeat and surrender
In both case they are happy.