Leaving O2

[BeckyW1]

I moved network on the 30th August and took my number. 

i don’t know if I need to have given formal notice as well as requested the PAC and transferred. 
Has my account been closed and my charges stopped or so I need to do something more? 
thanks

[pgn]

Guide: Cancelling Your Contract has the collected tips for this, @BeckyW1 

There may be one further bill to balance the books, with a refund of any remaining credit balance happening automatically to the registered Direct Debit account within a couple of weeks of the bill.

Sorry to see you leave O2, @BeckyW1 - hope the new carrier serves you well.