Our bill charge did not reflect updates we made to our plan

Hello, 

About a month ago, changes were made to our account plan that were not authorized by us. 1) NOW TV was added for $20/mo, and 2) our plan was changed to a higher speed. Our bill was going to be $101.60.

I spoke with a live agent on chat, we reworked the plan, and our new bill would be about $55.28. I got an email confirmation about it on 3/26, well over a week before the bill was due. Days later, the app still showed an amount due of $101.60. I got on chat again, and the agent said he was "updating the account" or something, then said to give it 12 hours to see the updated balance. I have a confirmation # for that chat ([Edited: "Personal Information"]). Days after that, the app still showed $101.60. We have now been charged $101.60. I would like a refund for the difference, and/or an explanation.

I would attach screenshots of the confirmations, but I don't see an option to do that here. 

Thank you.