Aircel — Balance Cut on name of illogical excuse

Address:	Chennai, Tamil Nadu, 577004
Website:	aircel.com

My aircel karnataka number [protected].
Sir, Aircel was giving 500MB 3G free of cost by dialing to *121*500# for 10 days which i activated on 4th April #proof image is attached. Then suddenly on 6th of April Aircel withdraws all my internet balance and also make my Rs 218 balance to zero without any prior notice giving excuse of internet access for just 30 mins browsing fb.
I don't know why they made all the customers fool making their account to zero on name of free 3g.
But the more sad part is that after agree to their fault on 6th april, they told that it was a fault. I will get my refund of my balance within 24hrs.
But soon after that they blocked me to connect to customer care.Also they didn't solve the issu. When i tried contacting from a differrnt aircel no. to ask about the balance .they rolled back and said they cant refund.
Please sort out the issue.
They are making fool to many customers