HDFC Bank — Reduced balance

Address: Gurgaon, Haryana, 122050

First my salary account in hdfc bank my employer change my salary account in kotak mahindra bank after about 6 month my employer salary turn in same first my salary account in hdfc bank but condition apply in employer & hdfc bank that refund account non maintain charge account holders. Bank refund my 3 month charge in 10 nubember 2015 .and December 2015, January 2016 non maintain charge deducte but not refund about RS 342.00. My customer ID 42353958 plz sir solve it.