Sorry to hear this has happened to your daughter.
EE will do nothing about this. Legally, they are the ones who have been defrauded and so they can either declare it fraud, or pursue your daughter for the balance, whose identity has been stolen. Unless you can prove EE has not followed the very lax Ofcom requirements for identity verification, they will not do anything. May advice is
1. Do not pay them a penny, they will use this against you.
2. Keep a record of all communication and record all phone calls
3. Use the fraud number for any credit rating agencies to have it removed from your daughters account.
4. Ignore any threatening letters from EE demanding money, or threats about debt collection, you can use the fraud crime number to stop debt collectors.
I contacted as many people I could online including journalists, councillors and my MP. My MP contacted EE to ask about the situation, and within 45 minutes EE reversed their position and closed down the accounts. EE don’t want any bad publicity so if you make a big enough stink they will back down. Search the rest of this forum as I believe someone was collecting stories and a consumer rights journalist was interested. Don’t give up, it was one of the most stressful things to happen to me.
Good luck
