If you’re looking to call the O2 support number don’t use the numbers on their website as they all attract a charge, whether it be a one off 25p or call charges depending on your location.
Call the O2 support number from your mobile for FREE on : 202
This is something they don’t tell you until you actually phone on one of their chargeable phone lines.
Find out more contact info here: http://www.o2.co.uk/contactus
Who are O2?
O2 is the commercial brand of Telefónica UK Limited and is a leading digital communications company with the highest customer satisfaction for any mobile provider according to Ofcom. They offer mobile phone services from pay as you go to pay monthly mobile phone contracts.