Absolutely appalling customer service! After being a long term loyal customer for 15 years I’ve today ported my number to another provider. After 15 years with O2 I was randomly sent a text and email advising that due to a billing system upgrade my plan can no longer be support please call us…. After wasting five hours on hold to the “special” number I contacted normal customer service who are all clearly off shore and very very rude! Multiple advisors said they can only look at the new 360 billing system and transferred me to only then be cut off! I’d had enough and after contacting the CEOs office to only be robbed off again was the final straw! Just like O2s parent company Virgin Media the customer is at the bottom of the priority.