AT&T Prepaid sim says activated but not working

Hi all,

I ordered a new Prepaid SIM card requesting Number transfer from my existing carrier. Got the SIM card today, but when i tried to activate it , it says SIM is activated. But its not working.

I put the number transfer online while ordering the prepaid plan. I even checked the Number port status and it says confirmed.

But when i received the SIM today, it is not working. Phone detected the SIM correctly but cannot place calls and data is also not working.

Whereas, my old carrier is still working (which would mean the Number porting did not happen yet or the new SIM is not activated yet).

I activated the SIM multiple times online by giving the SIM card number, IMEI number, PIN Code, Everytime i got the message saying my number is Activated.

But it looks like it did not.

I am trying to reach AT&T personnel thru Chat and Phone. But either way they are not reachable. I am thinking about returning the SIM if i could not get any resolution.

Any help is appreciated!

Thank you,