Changed sim from EE, still accessible?

[tn999]

Hi,

So I have recently left EE and was wondering how Ican confirm my numbers aren't with EE anymore? I clicked 'Leave EE' on the app but it didn't send any confirmation. I had another SIM card that came with my main number, is this disconnected also? How can I make sure? I think other people are using this number now as I am getting weird notifications. Any help is appreciated. Thank you!

Also, If the other sim isn't disconnected, I have a voicemail notification on it but I can't listen to it. What should I do? I didn't set a pin number.

[XRaySpeX]

1. See if EE responds to its own Text Service. Text NUMBER to 150. Does it respond with a sensible reply stating which EE brand you are on, or not?
2. Porting 1 no. away from EE won't affect any other no.

[tn999]

Thanks! I tried messaging 150, but it just says 'we will try to send your message when there is a connection' along those lines. Does this means the number is no longer with EE? 

[XRaySpeX]

Yes, it's with nobody.