Do i deserve to be paid because i babysit my bros?

Ok so im the oldest of my other two siblings(their both boys) but one of them is my twin, too. I am significantly more mature than them and am often the one that breaks up arguments etc... So my mom leaves alot because she does pampered chef and my dad goes to work. Everytime she leaves she says im in charge and im starting to think i should be gettin paid cuz im pretty much babysitting them. If they do something wrong the respondibility is on me! And i dont get an allowance or anything. Do you think i should start gettin paid to do this??