They give our mobile number to outsourced AC technicians for directly taking Service Appointment. Sometimes multiple vendors call up. They are just technicians and very raw in speaking, do not understand anything, just say "Aapka Carrier AC ka serbice due hai, abhi aa jaaoon kya". Not only this, there are multiple such vendors calling up. No Emails, No Customer Care involved. Carrier Company sucks on after Sales Service and Processes