Where can i find the hq of ox2? Sweden (HQ) Lilla Nygatan 1. Box 2299. 103 17 Stockholm. Interested in us. General inquiries. +46 8 559 310 00 [email protected]. Write about us. Media requests.How do i contact o2 broadband customer service? Mobile Broadband Customer Service. If you are not an O2 Mobile customer, please choose from one of the numbers below: Pay Monthly Mobile Broadband: 0344 809 0202 Pay As You Go Mobile Broadband: 0344 8090 222 Business Mobile Broadband: 0800 977 7337.What do i do if i have a fault with o2? Contact your account manager. If you are managed by a local partner please contact your partner. Limited service outside of these hours is available if you have lost or had your mobile phone stolen, or if you have a fault on your O2 landline. † Free from an O2 Business mobile, other providers' charges may vary.What services do o2 services offer? Services Manage your account O2 Gurus - tips and advice Keeping kids safe online Ideas and Inspiration O2 Drive - car insurance Connected Coverage checker Best Network Coverage 5G network O2 Wifi O2 Travel - roaming abroad Help Browse Help