EE pay as you go SIM card not working?

I've had my New EE SIM card in my phone for a couple of hours.
Top right of my iphone where the network providers signal should be, there's a no service message so I go on to settings> general > about then. It says network not available! I don't know what to do I tried to go on to the EE website to active but it says phone number not available,
My phone is certainly not faulty as I be tried different sim.
Also turned my phone off a couple of times!

Check to see if the sim card is inserted properly.

Just got mine through and its the same. I got 2 sims through and both are the giving the same problem so it must be a faulty batch of sims or there's an issue with the network