New contract not showing in my account

My contract was coming to an end so I renewed with a deal that was offered to me on the app. This was on the 15th September, and I received 3 emails confirming the change (one with the order summary, one with the contract, and one final email confirming the changes and my new monthly bill of £27.75). 

A month later, the changes still aren't showing in my account and it states my monthly bill is £65.97. 

I spoke to someone on the live chat yesterday who said the updates had been applied to my account but they don't usually take a month to show. How can I check that the new contract I signed up for is in place? Ideally before I am overcharged?