When MacBook was re-launched by Apple, then many users complained about staingate in retina display. This was the most common with MacBook Pro with retina display. Due to graphic card error, MacBook anti-reflective display coatings leave patches on screen which may be small or large blobs. This looks as if your display has been broken. In this situation, users frequently called on contact live technical support for Apple MacBook Pro to have solution. After receiving lots of calls, emails, messages and bulk of posts on social media, Apple realized that it was their manufacturing fault.
This issue was reported with Retina MacBooks or Retina MacBooks Pros. More than 4,700 users signed for change.org petition and over 4,100 users joined its Facebook pages. After seeing this display issues with majority of MacBook users, Apple started a quality program to replace and repair MacBook that was getting retina display problem. Apple provided free replacement and repair service for three years from the date of purchase of MacBooks. Apple also promised that it will refund money for those who have paid for repairing or replacement of faulty display. Read also Upgrade The SSD With Retina Display In Your Macbook Pro here https://www.rebelmouse.com/mactechsupport/upgrade-the-ssd-with-retina-display-in-your-macbook-pro-1935283832.html
Apple has not listed programs on its website to recover MacBook display issue. So you may dial a Apple certified technical customer support for MacBook as you can have the complete information of the services to be given for stained Retina display. If your MacBook is under warranty period, then you can get the Apple free replacement and repair services. However, if warranty period has been expired then you need to pay for services or you need to connect with some Apple certified independent service provider. These service providers can sort-out your trouble with in a minimal period of time.
For receiving Apple free services, you need to fix an appointment with Apple customer service. They will provide you a fixed time to reach their service center to have direct help with their technicians. IF your issue is minor, then it will be sorted soon and if you need replacement then it may take some days. So here, you need to have some patience.
After replacement of display, if you are still receiving staingate issue then you can again have free replacement and repair service. But, this can only be possible if your MacBook is under warranty period. However, if you are facing any other sorts of issues with your MacBook then you can call on Mac Technical support number to find quick resolution. Read also MacBook Pro vs. Air: Which Minicomputer is Right at http://www.apsense.com/article/macbook-pro-vs-air-which-minicomputer-is-right.html