DATA LOST

I USE A DATA STICK AT HOME TO DO MY WORK IN DECEMBER 2019 956MB JUST GOT LOST I THEN REPORTED IT TO VODACOM THIS IS AFTER THE SECOND TIME THAT THIS HAPPEND I EVEN TOOK MY COMPUTER TO A COMPUTER SHOP TO LET THEM CHECK WHAT IS GOING ON. VODACOM THE SEND ME A SMS AND GAVE ME 1024MB BACK. I TAKE A REGISTER EVERY TIME I GO IN AND I LOCK OF, YESTERDAY MY COUNT WAS 475.42MB, I SPOKE TO SNETHANDO AT THEIR HELPDESK SHE IS TELLING ME ITS UPDATES AND AL THAT. I DO MY UPDATE MANUAL AT WORK.