Airtel — about my data

I have recharged for rs 199 plan which gives me 1.4 gb per day and i stepped to 4g phone so i also got 1 gb extra for a month now iam not getting 1.4 gb per day and not even the extra 1 gb iam facing really a big problem what do now please let me have 1.4 gb correctly when i was trying to check it is showing u have used 750 mb from daily limit of 1024 but daily limit is 1458