Karbonn mobile
My mobile handsfree pin is not working properly

Hi this is subbu i m frm Bellary (Karnataka) i have purchased a new Karbonn Mobile in bellary before a month and now it is giving some problem the problem is nowadays all will enjoy to litsen music in handsfree so i will use handsfree more than handset nowadays my mobiel handsfree pin is not woptking properly so can u inform me my nearest service centre and what r the charges and how many days iot wil take plz help me... my contact no are 919738970960, 918050370765 your's faithfully

subbu