O2

Hi,I'm on a £20 sim only tariff. I have 17 months left.Is it possible to make a overpayment on my account of £340 to cover the 17 months?Thanks.

Hi,Everytime i dial 1750 to switch on voicemail im getting error"Thank you for choosing to use O2's voicemail. Please hold the line whilst we switch on your O2 messaging service, you have not been charged for this call..... Your messaging service cou...