AGAIN THEY REMOVED WHATSAPP APP FROM THIS SAMSUNG MOBILE PHONE

JUST HALF AN HOUR BACK THEY AGAIN DELETED WHATSAPP APP FROM MY SAMSUNG MOBILE PHONE. I IMMEDIATELY DOWNLOADED THE WHATSAPP APP FROM INTERNET AND TRIED TO ACTIVATE MY WHATSAPP ACCOUNT. BUT COULDN'T. AS THERE IS NO INTERNET AND PHONE SERVICES IN MY JIO SIM CARD, I COULDN'T RECEIVE THE VERIFICATION CODE. SO I COULD NOT ACTIVATE MY WHATSAPP ACCOUNT. AND THERE IS NO INTERNET AND PHONE SERVICES IN MY JIO SIM CARD. I AM REALLY IN A BIG PROBLEM. I ALREADY CONTACTED JIO CUSTOMER CARE AFTER SEVERAL ATTEMPTS. THEY SENT A LINK OF A YOU TUBE VIDEO. I CORRECTED SETTINGS AS PER INSTRUCTIONS OF THAT YOU TUBE VIDEO. AFTER THAT I RESTARTED MY MOBILE PHONE. STILL THERE IS NO INTERNET AND PHONE SERVICES IN MY JIO SIM CARD. WHAT IS GOING ON?