give a long answer please

"Elixir Pharma" took to home delivery of medicines as a response to Covid uation. But the model remained as a feature after Covid situation changed. With siness growth new challenges showed up like delay in delivery, wrong items iting delivered, returns and re-deliveries, out of stock of some items, while some ner items are over stocked, moving goods between pharmacies to get inventory ance. Transportation and warehousing costs are on the rise which leads to nning of margins. How can they leverage various supply chain drivers to meet ir objective of "better service at optimum cost"? (