Vodafone — Credit limit was 500 but my bill generated 3200rs after that they promise for waiver of 2800 aprox via mail i have but not providing

Address:

Jaipur, Rajasthan

- date of the incident-may 19 june bill they send mail for waiver of 2800 on 2 july 2015 - client number[protected] - full description of the incident : Actually my bill of 19 may was generated of 3200 aprrox even my credit limit is 500 so how it is possible to cross that.Actually i received an international miss call in may and my child redialed on that number the call was of 30 min approx and for that they charged me 2800 approx of single call even my limit is 500. After that i mailed on custmer care for waiver and they promise me of 2800 waiver via mail i received and said to pay remaining amount which was 350 aprox and i paid 400 after that they did not adjust amount in outstanding balance which is showing 3200 approx in my current oustanding amount.Please help me i am middle class family man.I hope you guys will help me asap. Thank you in advance