Being billed for old contract, but don't know the mobile number to cancel!

[northstarisland]

Hi All, 

Welcome your advice please!

I'm paying for a contract but don't know the mobile number.  I can't call Three to cancel because they ask for the number when you call 333.  There's no 'I don't know the number' option. The only information I know is the account being charged/card being used.

How do I speak to Three?

Thanks!

[Geluk]

Contact via CHAT or Direct Message on social media eg "X".