I would give a minis score if I l could - Appalling customer service. I have a 30gb plus ( switch up contact) but hey deactivated the switch up option without Informing me. They said they don't know why it has happend but will not do anything until it is investigated. I wanted to upgrade and receive the upgrade offer. (Free earbuds etc) Bit looks like I will miss the timescales. After being and waiting on the phone for 2 hours whilst the customer services women was trying to contact a colleague they eventually told me they would ring me back - that was 2 days ago and I'm still waiting - absolutely shocking treatment to a long standing customer. O2 NEED TO GET YOUR ACT TOGETHER AS YOU WILL LOSE MANY MORE CUSTOMERS.