Would have given zero but had to pick one. O2 is a joke been with them well over 10 years always paid bills on time, but my phone brock last year paid £84 to upgraded. Thank god used my credit card which I hadn't used before because next day had lots of fraudulent transactions. Called o2 still waiting for callback. Dropped my new phone in water so called 02 as i bought new phone and had free sim from virgin for 18 months. Said i wanted to cancel my contact but advisor said he would give me a new phone and I only had to pay just over £10 what an idiot I agreed because I had always been happy with them. Today so unhappy untrue 2 days ago started getting calls saying I owed £12.46 though it was a scam. I called 02 and asked if this was a scam. Guess what my new phone was an upgrade and I owed the money for old phone . I pay DD so asked why never been told about this and why not take money from bank. They told me they couldn't take money from bank. My daughter was really ill today and they cut my phone off. Phone is now back on and you know what they owe me £10. I'm taking this further missold contact then no phone line. WHAT CAN I SAY USED TO BE GREAT BUT AWFUL NOW!!! Lot more happened but would be here all night.