Hello @Alzbeta ,
Welcome to the community,
You need to use another phone or web based app to ring customer service to let them know you have lost your phone, so that they can make sure no one uses it, the same with SIM card, and they can then send you a new SIM card, no email address, no good for that anyway.
See my signature for ways to contact EE.
This is not customer service and we have no account access here, this is a public forum.
To contact EE customer service dial 150 from your mobile phone or ring customer service for free using web based app or another phone: +44 800 079 8586 or +44 800 956 6000.
