@Anonymous User
Welcome to the forum. You can check what payments have been made by going to your My Account > My Payments page
https://account.nowtv.com/payments
If you want to query and payments, or you don't see the payments listed (which usually means they've come from a different account) then try popping onto live chat and ask them to look into it for you. You can get to live chat from the Contact Us page
https://help.nowtv.com/get-in-touch
(expand the Anything Else section at the bottom for options)
