Please please please don't make contract with O2. Read my story ! During the first lockdown my phone died and I had to buy a new phone but everywhere was closed except an O2 branch, so I tried to buy a phone but they said it comes with a sim card. I had no choice but to make a contract for a phone and sim card. But I never used the sim card and after less than a month I went back to the shop and I ask to cancel the contract. I paid for everything and they told me you paid for everything and you it's all done. Even after someday I received a letter from O2 that your contract is cancelled and the amount you have to pay is £0.00 but after more than a year I realised there is a negative impact on my credit score because of O2! So I rang them and after one hour keeping me one hold and passing me to each other, they told me you have to pay an other £10.28 and they didn't care when I said I paid for everything and I even received the letter that was saying my balance is £0.00 so I told them I pay but please send me an email that, this is the final payment and I there will be no more charge in future and she said don't worry this is the final payment as your account has been disconnected more than a year ago and she send me an email that your final payment was successful and you will not be charged any more. But again the day after I received an other bill with £1.80 !!! So I called them an after being on hold for one more hour I paid that as well. Each time I call them I had to be on hold for a long time to speak with someone and after explaining everything that person couldn't find my account so transferred my call to another department and I had to wait long time for someone else to explain everything and this person could find my account and send me again to another department and wait long time on hold for a new person to take the payment.😡😡😡 and this long, funny, mental ruing process happed every time I called. They ruined my credit score, my time and my mental health. Please, please, please don't make a contract with O2. They do too many mistakes and you have to pay for their mistakes by your time amd money and mental health.