Delivery not received. Bad courier ever

Worst post sale experience , been waiting for 2 days to get item delivered. Skynet is worst courier ever , I received an sms stating my order is out on delivery . today it is day 2 with no update nor feedback. I have called them no answer and I have sent them chats they do not respond and claim delivery was attempted . It is seems i am speaking to a rock . Synet doesnt care about customer and it seems Istore also doesnt give a damn