I'm having severe problems with o2 at the minute, I signed up for a business contract in February 2013, I've been in the contract for a year now, but from the start of the contract I was being overcharged every month for calls that I didn't make when I was supposed to be on business unlimited. In September 2013 I started having problems with my signal, my calls were dropping, I couldn't access the internet or send text messages for hours at a time, from September until now I've phoned up multiple times about this problem, I've changed my Sim card twice and every time I changed the card it took 3 days both times to activate the new Sim cards, I also took the phone to the apple shop on so many occasions that every person in the apple store knows me by name and why I'm constantly there, there was nothing and has never been anything wrong with my iPhone, and when I explained this to o2 they didn't care, they tried to replace my black 16gb iPhone 4s with an 8gb white iPhone 4s to see if that would rectify the problem, no matter how many times I phone o2 to complain, they call me a liar saying that I constantly use my phone and that there's nothing they can do, I have emailed the complaints department numerous of times and they keep telling of com that they have never received any of my emails, its unacceptable I'm constantly paying over 42.00 for a phone that does not work and hasn't worked properly in 6 months, they tell me if I want out of the contract I must pay over 300 pound to have the contract ended early, which is outrageous, why should I pay off the rest of the contract for a faulty service they are providing but denying there is anything wrong. What should I do?

I'm having the same problem with o2 and have been since September, I offered to give back the phone as I've had my contract a year, I'm constantly being overcharged and my calls always drop and I don't have signal for hours, o2 refuse to do anything about it saying I'd have to pay out over 300 pound for a phone I don't get the full service from, so count yourself lucky because I've exhausted my options I've complained and am still complaining to o2 6 months later and nothing has been resolved, I've reported it to ofcom as well and still nothing so I'm out of options now