Hyundai Motor India — Ignition coil damaged within 6 months of santro car purchase

Hyundai snatro car was purchased 6 months ago and during the starting days of August it started vibrating. When we came to showroom at Panna Hyundai, chanpur, Tripura on[protected] they informed that ignition coil is damaged which is within warranty but till now the part is not replaced; so we are facing serious troubles. Kindly resolve the issue at the earliest and save us from this trouble.