Damaged product and the worst customer service

I purchased a washer+dryer set brand new it was delivered and installed by Samsung authorized service. The washer came with deep scratches and the dryer had an issue in the internal drum which was unusable. I called the customer support to request replacement. They offered me $120 for each appliance to keep them. I accepted for the scratched washer but requested a replacement for the dryer. The totally inexperienced attendant made a big mess she requested a partial refund and replacement of the washer and did nothing about the defective dryer. As a result they are replacing the washer and the partial refund was canceled and they are not being able to replace my defective dryer anymore. And no refund was made for having a defective dryer instead of a new and working one. More than one week and I have no plans for fixing it. I called customer service 3 times and nobody could solve the mess the first attendant made. It is just continuing, I have no working dryer and no refund. And every time it looks like the people in the support center cannot understand English. As they all kinda of mistakes even repeating what I want more than 10 times. Even when they realize they didn't understand they hang up.