Ecom Express — They don't provide delivery and don't have knowledge about parcel

Ecom people are not bringing parcel at all they just put location is unlocatable .they even don't call customer ..when customer got message that product is out for delivery but they are telling they don't have. Product and they don't have knowledge about the product ...in other case the delivery told that he can't bring the parcel because it was big in size ...and told me to come around 50 km to take parcel at hub when i asked him about this he told you can complaint where u want ...my number [protected] ...first is case of netmeds where delivery boy don't have idea of product but it's showing out for delivery another is a product from Amazon where he completely denied me that he can't deliver because of parcel is big in size ...so irresponsible behaviour ...as i required tablet urgently