Same thing happened with me too on the last day. I think what's happening here is that they are giving data and sms for only the number of hours that are shown that day. For example 100 sms are for 24 hours which means 4.17 sms every hour and here the validity is shown till 7PM on one connection, which means he is getting 4.17 x 19 (80) sms today. Same is the thing with data as well. For me my summer surprise was started in the same day this happened so I think same will happen with him too.