New SIM problem ?

Activated my new Smarty SIM yesterday and I notice that the mobile number in the Dashboard is not the same as I requested (i.e. I sent a PAC code to Smarty with the details).
However even though the number displayed is not mine all my old services seem (?) to be working.
When my wife calls my new Smarty number to test it out there is no connection but my old number (from vodafone) still works.
This is not so much a complaint as a “what’s going on” question ??