Disappointing service after 5 years with them

*********** bunch of people. I changed my service to 50/50 in 2019 and paid for the service ever since. They apparently had a price update with no notifications and downgraded my line to 20/20 at the same price. I then proved to them that the pricing im paying right now is for 50/50 by showing them latest screenshots of the websites and app, they quickly went to their sales team, edited their app and website and basically said its my problem and need to upgrade my line. Now while i understand there are price increases, i did not give them permission to downgrade my line, neither did i receive any notifications of the price increase or downgrading of the line. Their billing person made me out to be the one at fault however after giving her access to my profile and sending screenshots of the pricing she promised to call back but didnt.

It’s now over a week and I did request a line upgrade with no luck! No customer services manager called neither did any managers