For more advice or assistance on setting up your new devices, please ring our Customer Care team on 0800 0646464 or email CustomerCare@welcomm.co.uk. 

My O2 Business allows you to stay in control of your O2 mobile, landline and broadband accounts, online 24/7, from one place. This service is also free, and enables you to view current tariff and allowance information. Please speak to your account manager for assistance on setting up your online billing, understanding your first bill, and how to download, analyse and email invoices and itemised data to yourself.

Once we have reviewed your bills, we will be able to help you establish which 10 UK landline numbers you call most to take advantage of these free unlimited calls. Your account manager will work with you to identify this and can either set it up on your behalf or show you how you can do this via your My O2 Business login. 

Your line rental is invoiced a month in advance, but your calls are invoiced at the end of the month. So for your first bill, it includes line rental for the days you’ve been with us so far – plus next month’s line rental in advance.

Say you joined O2 on the twentieth of the month. Your first bill will cover line rental from the twentieth to the end of the month – plus any calls you’ve made or data you’ve used in that time, and line rental for the whole of next month.

If anything’s unclear with your bill, please get in touch. If you have any queries regarding your O2 billing, please call 0800 0646464 to speak to our Customer Care team or email CustomerCare@welcomm.co.uk. 

If you have Unified services with Welcomm, including landlines, Horizon, SIP Trunks and Data, Welcomm’s in-house accounts team will reconcile your billing and email it across to the lead person on your account each month. If you have any queries regarding your bill, please contact the accounts department on 0800 064 64 64 or email Billing@welcomm.co.uk