Reliance India Mobile — net usage

sir i have rechared in my reliance sim of rs 123 which gives 1gb data for usage 510mb instant and 514mb after 48 hours when i used data in my donggle then data becam 0mb before one minute and i have also lost my main balance when i called to coustemer care then he told me that it was only for mobile but they did not mention any information about data use only in specified conditions regards Abhishek nagar [protected]