Spark Driver review: Driver unable to make delivery, does not speak english

I spent about 40 mins in text and finally a call to driver. Put very explicit delivery location route but driver does not understand English. Her name was Vildan delivery was from walmart in toccoa ga. She did try to find it but but since unable to read or understand simple English phrases like "put Oriel Street(which I spelt out for her) in GPS. Now my medicine I was waiting for that I need this evening is with the driver until she decided to return it to store, has 24 hrs!?
This medication should not be in others hands. Now though I pay for delivery every month I have to go out at night, if she returns it tonight. I do not see well at night but again need the medication that came with order. This is inexcusable and not the drivers fault is your hiring practices