Airtel — 4g net pack worth rs 899 and rs 349

My 4g sevices are not working and i contacted ur customer care services which were of no use to me as after they said ur data would be working in an hour but it did not happen and now i m frustated with them as they are not doing anything. I have always loved airtel and always recharged rs 899 pack and i loved this pack but now it is not working since past 7 days and bcoz of which i rechached again with a new pack of worth 349 yesterday which said the recharge have been done but i m unable to use it. I want my 349rs cash back and this is very disappointing to me that ur customercare services are of no use bcoz they dont help instead tells about whats going on nowdays and etc. And i have always done big recharges. So please kindly pay attention to this situation and return my 349 rs.