Confused to in what MSP actually do

So i'm the only IT onsite whos managing 3-4 sites .. and do pretty much everything. From my understanding MSP just like maintain firewalls switch hardware out or maintain virtual servers upgrades etc.. So my main question is do they get ticket's are they supposed to also help me out on smaller issues like even help desk stuff ? I feel like my MSP is not really helping me when I ask him questions and I have to always figure out how to do it .. I'm wondering if it's because if I learn everything then he wont have a job type of mentality they have? .. Just asking thanks