Great Eastern Appliances — Regarding ac installation

I purchased Whirlpool refrigerator from great eastern suri branch birbhum..when the product was delivered we came to know this will be installed within 5 hours.The product was delivered around 12 O'clock.Anyway we waited for 5 hours but unfortunately none had come to install.Then we called to Great eastern and then they logged our product for installation.I immediately called the person who do the installation as I had his number.He told me that he was not informed about this, if he was informed then he could do this by that day.I again called to Great Eastern(the no was [protected]) to query why he was not informed after the delivery, what was the reason for that delay, the person from great eastern who received the call, just put down the receiver.I was so shocked.I again called her and she misbehaved with me.They don't know how to behave with customers.After sometime someone called to my another number to say that I have misbehaved with their employee.Just ridiculous.At first they should make their employees learn how to behave with customers.Customers have many options to buy the same product.