I was browsing my state-subsidized options and landed on an Oscar Health plan that's listing a $0 monthly premium and $0 copays for doctor visits. Sounds perfect, yesss... However, the online reviews are brutal about customer service and claims handling. I'm just curious about if I do sign up, will I be locked in for the whole year? I'm dealing with several health concerns and can't risk being stuck in a plan that's a nightmare to use.