Really, it was a horrible experience for you.
I am also a plus member there, but I never got such issues there.
Calling with customer care and executive officer always be irritating as they always ready to listen to the same problem again and again.
There is no alt option, just calling the customer care again and again. If your problem resolves, then give negative feedback.
Don't go for return as till now you have not got your delivery.
Just hoping, your problem will be resolve soon.