LG Electronics — Nobody responding for free service of my AC since last 6 months

Address:

600042

Hi,
Its been more than six month i had purchased LG split AC and as per company norm i am eligible for 3 free service within one year and 1st free service was supposed to be after 4 months of purchase.But its very unfortunate that nobody has contacted me for the service till now.Seems quite unproffesional attitude of LG executives.
Now i have observed that a huge sound is coming from the AC compressor and unable to use the same.Please do the needful to make the AC issue resolved at the earliest and make customer feel that their preference to LG brand is justfiable.