Hello, some years ago, my daughter gave me a Nokia 6310i (excellent phone!) together with a number of 3 digit free phone numbers (such as 453 to find out my credit balance). For quite a while now, when I dial 453, I hear a message that tells me that that number is no longer available.
My question is ... what number do I dial to get my balance?
Would be grateful for any help please.
Hope to hear from you soon. Thank you.

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