Charged for balance remaining eventhough it is 0

[cba1]

My contract with o2 ended a few months ago so I got a new phone and when I requested a pac code to transfer my number over it said there's £81.10 left of charges. However, when I go to my o2 it says the balance left on the contract is 0 so where are the fees? The contract has been paid and I want to change, now where is this £80 coming from?

[MI5]

@cba1 

I assume you have still been paying your contract with O2 so I guess you've paid off wat you owe by now?

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