If you are trying to get back a refund then you can only do this by contacting customer services
If it's a refund of a £300 deposit you paid, then it should be returned to your bank automatically after you have paid 3 months bills on time. It will be paid back onto your 4th bill.
If it hasn't then it's still customer services you need to call as we have no access to your account here.
Best of luck, welcome to the forum and Happy new year
*The Game Is On*
How to get your deposit refunded here https://www.o2.co.uk/help/account-and-billing/refunds
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