Medlife — it's better to close the business

I placed an order (Or3115kza-001a) on dec 4, order confirmed and assured to deliver by dec 10.
Already informed while placing an order that the medicine is important and it must be delivered by dec 10.
Yesterday (Dec 8) i called your customer executive to know the status but surprisingly your executive told me that some of the medicine which i ordered is out of stock.
If that was the case
1. Why haven't you informed me until i called?
2. Why have you confirmed the order earlier?

Are you going to deliver the remaining medicines by tomorrow (Dec 10) as promised for sure?

Or you just take the order and cancels later because this is not the first time it is happening.

The medicine is for a pregnant lady, is it okay if she skips medicine because of you?