Aircel – Uneccesary Deduction of balance

I get recharged of my no. 8963096402 by rs.144 and where by i got a balance of 150 rs…later on, at night an ususal deduction of rs.50 was there, i dont about what was that. But wenever my balnce is above rs 50.some kind of unusual deduction is there.its like the company is waiting to deduct my balance when i update my balance an usual deduction happend…later on in next afternoon a deduction of rs 30 was there…
Really i am so troubled with this company and want to change it…