what number do o2 call from
Business Customers. Just call Business Customer services as usual â 8002 directly from your mobile or call the number that will be found at the top of your invoice.Select the iPhone option and you will be put through to a team of experts who will be able to answer any questions you may have.Corporate Customers.usiness Customers. Just call Business Customer services as usual â 8002 directly from your mobile or call the number that will be found at the top of your invoice.