Mistake in upgrade

I made mistake and buy upgrade silver, I wanted buy Bronze, If I downgrade I will Charge only for Bronze ?

Hi again Natia, 

I have posted a response on this thread of yours. You are currently on Bronze plan and you'll be charged $19 per month from now on. And as I mentioned in the post that I hyperlinked you have been refunded the price difference between two plans. 

Thank you for contacting us.