Idea Cellular — Not getting full talktime of rs 15

Address:

Dhanbad, Jharkhand, 828114

Dear sir/madam,
I’m murlidhar singh from gopalpur, katras bazar, dhanbad (828114). I’m a consumer of idea no-[protected]. I got an text message from company (Ib-612345) that is recharge with rs15 and get rs15 full talk time. This message i got on 16/06/2017 at 11:38am, so that i recharge with rs 15 on 16/06/2017 at 06:21pm but i got only rs11.54 instead of rs15

Thanks