Let's all be honest, Three is the worst of all UK mobile phone service providers. Their customer service is below the standard required from an average mobile phone service provider. They have this unforgiving, pathetic, and harassing behaviour towards their customers for an outstanding bill. Even if the balance is below 2£. From the information we wave gathered, using Three Mobile Service is riskier than other services. These guys provide a ''neck on your throat' service and would cut your line off when most needed and just like that. Based on the information we have received, they also call their customers harassing them to make a payment or else their services would be restricted. Most of their customer service callers are based outside the UK. It seems, there can't be a service less worse than Three. Speak to a UK rep if you are running behind your bill and wants a bit of time. It is not a guarantee though that your complaint would be resolved. Do not waste your time with this service. They are pathetic, and one of the worst UK Mobile phone Service provider. Keep off and they will be forced to change.