If there was a rating lower I would give it no star or even negative. The worst customer service I have experienced. Network is rubbish, price is absurd and customer service is beyond hopeless. They talk to you rudely as if you did something wrong, all I wanted was to cancel my sim and have a PAC code, but I wasn't told I would be continuing the contract if I did not activate the PAC code, but guess what if you try to activate the PAC after 30 days it expires, so you'll end up paying for another month before you realise you still have an ongoing contract with O2. Please do not go on this network! Anything else is better like Three, EE, Vodafone, PlusNet, literally any other network provider is better in all aspects.