Hitachi Home & Life Solutions India [Hhli] — Air conditioner service

I have requested for a regular service for my hitachi air conditoner nearly three times in the last one month. No one has come for the servicing till date even once. And they close the complaint no. Without even giving any service.
Here are the messages i got from them :

June 4 - dear customer, your call no [protected] is cancelled due to service not required. For generating a new call visit www.hitachi-hli.com or call at 35324848

June 8 - dear customer your service req. [protected] for the air conditioner shall be attended asap. Share cdn:-7603 if you are satisfied with our engineer.

June 20 - your call no.[protected] is closed in our system. Total amount collected rs.0 for the work done. Pls call 35324848 for any other service. Thanking you hitachi