Haier India Deep Freezer — worst service in chennai

Address:

Chennai, Tamil Nadu, 600119

Cust name: kumar gaurav ([protected])
Product : haier 7.2 kg semi auto washing machine (Xpb 72-713s)

Problem: 1nobe is broken.

Issue: engineer asked 3times more amount for service and device.
Service charge is inr 236/ (Including gst)+nob charge (Approx r25-30), but he's asking total inr 656/

Need to know the actual how much price i need to pay?