Thank you for the information, you been really helpful. I reported to the police already and I have reference number. I will definitely write the letter to O2.

I took new contract with O2 and new iPhoneX and chose home delivery option. The driver left my delivery with my housemate and he has signed for it. I came home and couldn't find it anywhere. Asked my flatmate and he said he left it in corridor inside the house but it has gone. Contacted O2 but they say they did everything correct and not that's my problem and I have to be fully paying for it. Is there any legal regulation that he is responsible for my parcel he has signed for? Or is it O2 for not giving it to me as they claimed I will have to sign for the delivery? I was sure it has to be me only who can sign. Any ideas please