You will loose your customers or get bad reviews i...

You will loose your customers or get bad reviews if you choose this courier. My story is:
Notification was provided that my order will arrive on a certain day but i waited all day and no-one came; no card left behind. Second delivery attempted when i called to complain, and i requested them to deliver on a certain day because I am not available. They said yes multiple time and confirmed with notification but again, waited another full day and no-one came. Called them up and they realise the guy doesn't do delivery on that day! Wish they had some sort of notification beforehand instead of wasting my time. Then the courier suddenly came on a day which i specifically mentioned I will not be available! I only got a message the parcel has been dropped off. Didn't even give me a pick-up address. Had to call the courier multiple times to get the pick-up address and he even sent me the wrong address at first. No matter how cheap, this service is unacceptable.