Hitachi Home & Life Solutions India [Hhli] — Horrible after sales service

Address:

700019

Being a loyal customer I have Hitachi split airconditioner in all our six rooms in Kolkata apartment . All are covered under AMC.
The service providers do a substandard job in the name of maintainer service .
For the last 15 days I am trying to contact them as one of the units which had a manufacturing defect and had been repaired earlier is not working . The toll free has no response and the local AMC provider is asking for money to be paid to him directly for any service without proper bills .
Most harassing experience .