I cannot even begin to explain how poor of a service it is. In the numerous years I was with them I paid over the odds and never received any benefits (my mistake as I kept renewing with them). Then at the end of about 8 years of loyal service I requested to cancel my contract on it's expiry date... this caused a lot of stress and they didn't understand the concept of seeing out your contract. Once I finally sorted this I asked for them to unlock my phone that I had paid in full for, this took a lot of time and once again involved me spending hours on chat and going into stores, always to be told to do the opposite what the other side was saying. Then they overcharged me on my last payment and I was told I was be credited with the money back, after 2 weeks I had received nothing, I then checked with them again and they didn't believe me and said no record of the credit existed. Luckily I knew what they were like and had screenshot evidence of the chat with the company to which they replied 'okay we will sort this for you' (I was chasing everything). They then told me it would be in my back within 3-5 working days, 1 week later nothing. I then checked again on chat and they told me it hadn't been processed and they will do it now and it will be back in my bank in 3-5 working days. This has taken up a lot of hours and been very stressful, I have had to organise everything and put up with numerous lies and been passed on. I am still waiting for the credit to arrive that they legally owe me. Please do not join Vodafone, I have been part of O2 for a few weeks now and I have already received benefits and 5 star customer service whilst having a better phone for cheaper value.