Why was Bilbo getting frusterated at all the comotion at his house?

Bilbo was getting frusterated because all dwarves barged into his house without Bilbo knowing who they were and why they were here. All the dwarves wanted alot of food and drinks. Bilbo was getting tired and concerned to know about the adventure from them, so he went to bed even know all the dishes weren't clean, and he never ever does that.