Thanks for your post and or reaching out to the Community Forums, Reshmi06
Sorry to hear that you are having mobile service issues. This can sometimes be due to the SIM card not reading the port correctly, however if this isn't the case then the mobile networking team will need to be contacted to check the incoming/outgoing call routings since your port. Currently this can only be done by calling again as we have limited support from within the forums, apologies.
Thanks,
Corey C