When Is the update on iOS coming out that will actually make my phone work normal?

Dear apple before you decide to mandatory update my perfectly working 2 month old phone with your glitchy new software, could you please do some more research. I am starting to regret buying your product, my phone drops phone calls constantly, won’t send messages, took me 10 minutes and 3 tries just to sign in and send this message. I’m very displeased thus far and I just bought this phone.