If this is a Retina Macbook Pro, you may want to live with the damage that the unapproved cover caused.
The display cover or "glass" is integral with the display assembly and cannot be separately replaced. Expect a bill of US$500- 650 for a new display assembly replacement service.
If you have a non-Retina 13-inch Macbook Pro (has an optical drive slot), the pain is much less--hundreds less in fact:
https://www.powerbookmedic.com/Unibody-Macbook-Pro-Glass-Screen-Cover-Replacement---Front-Bezel---13-Inch-p-17333.html
You can try contacting the maker of the cover and requesting they cover the repair.