Hi Jercan,
Welcome to our community and thanks for posting. Really sorry to hear that you've been unable to make calls and use your mobile data. We understand the inconvenience this issues has caused.
Are you unable to call any number on your contact list or just certain ones? Also are you able to receive and send text messages?
Can we ask if you have tried a manual network on search on your mobile phone? We have included a self help guide here, which will give you further help and advice.
Kind regards Jodi.