We are sorry to hear about your experience with your Samsung Galaxy S20+ having issues with two green vertical lines on screen, and we apologize for the inconvenience it caused you.
We really understand where your frustration is coming from after trying to reset your device but to no avail, plus your subsequent experience with the service center that gave you an unexpected amount in order to fix the issue.
Allow us to help by bringing it to the Samsung Authorized Service Center in your area. Rest assured that our Samsung engineers and technicians are competent to assess your device and offer solutions to restore it to optimum performance.
For more assistance and guidance, you may contact us via our online Samsung Customer Care support channels below.
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We are sorry about your Samsung Galaxy S20+ having green and pink vertical lines on screen, and we apologize for the inconvenience it caused you.
Please bring it immediately to the nearest Samsung Authorized Service Center in your area so your device can get the proper attention and care it needs.
For more help and assistance, you may contact us via our online Samsung Customer Care support channels below.
Thank you for your honest feedback, but I am very concerned about what you've experienced in the service center. Can you please provide me here with the name of the service center and its location?
Please go back to the same service center in order to have your device undergo another round of evaluation with further recommendations.
Let us know here what comes out of your visit there.