Best answer by Mohammed
In this case you will need to get in touch with us and we will be able to locate this. If the phone was purchased from us, we can find the IMEI number and the SIM number for the SIM provided to you. If it wasn't, we can still find the SIM number and we'll check the last recorded IMEI on your account to confirm this to you.
Please can you email us on firstname.lastname@example.org and we will assist.