Sonovision — not responding after purchase of item

Sir, your shop is very good for middle class people but ur staff is not responding properly. I purchased ac from your shop. After four days i am trying to contact for installation but nobody is not giving proper responce. As they are giving the products for free.. And the delivery of the product also was very poor.. It been 3days that i purchased product but i didnt received the product yet... And they are not delivering the product on the timings which customer mentioned