Request for Refund and Plan Change

Hello,

I accidentally selected the annual payment plan instead of the monthly plan. Would it be possible to get a refund and switch my subscription to monthly billing?

I'm also confused as to why the options to select annual or monthly billing are placed in the upper right corner rather than directly above the payment button. I only intended to subscribe to the monthly plan and it is shcoking to see a charge of over $200 go through all at once.