@Vaida_1973 , it would depend on the post, as they are sent via second class post, and with the strikes can take even longer to reach you, so if you are desperate for the SIM card, then do as @DurbanboyUK has suggested and if near an EE store, go to them with an ID and they can sort it for you.
To contact EE customer service dial 150 from your mobile phone or ring customer service for free using Skype or another phone: +44 800 079 8586 or +44 800 956 6000.
