Wromg Deduction and Misbehaved

I have recharged my aircel no 8013358520 for data pack of Rs.9 myself through ussd menu on 19.04.2016. Now today i.e, 20.04.2016 they have autorenewed that pack without any further information. I called them earlier today for the refund because I haven’t used even a single mb and I dont want to renew. He told me that they are not gonna refund any money its my fault and repeatedly saying that you should check the plan before recharging, now when I asked that where had I checked that and why did they not gave me a msg regarding my autorenewal a day before? You wont believe he just hanged up the call. This is not gonna do. Please help me.