after spending time trying to resolve a simple problem using online chat help I was asked to provide an answer to the security question. It would not be a problem If I knew the question. I was informed they cannot provide security question but they needed the answer for verification purposes. I was told they cannot help me. I then phoned O2 customer service and they told me straight away what was the question but they could not help me either because my account was locked and required my phone to be active in order to proceed. The new sim has not arrived yet and therefore, I cannot do until I get the sim. I have an account for personal use. I cannot imagine relying on such a service if I was a business customer.