THE DELIVERY MEN FOR AMAZON ARE ABSOLUTELY HORRIBL. Review on Amazon

I have been ordering almost all my daily products from amazon.in and the delivery men have all been absolutely horrible. The delivery men which usually come always take 200-500? extra on evrythingg I order and if my worker pays the money they charge more than the actual amount. Today I ordered a product costing 1800? and he was charging 2000? from my worker as I wasnt there but I came in time and asked why he was charging 200? or 500? extra each time snd he said its because of the delivery but a delivery charge cant be more than 150? and that to I used amazon prime which makes sure it is a free delivery within 1 or 2 days. I said take the actual amount that was written on the bill but he didnt and so I told him I will complain and he said the exact words.I dont care go ahead and call the headquarters im not scared.and then he left the product on the ground and refused to receive the actual amount and ran away with the 2000?. I am going to be switching to flipkart and tell everyone I know as well to switch to flipkart if this is the case of service amazon gives me.??