The top doors rub against each other when trying to shut.. Service repair was informed by Samsung to replace all four hinges. After replacing hinges door steel hits other door so Samsung advisor told repair man that is common and we have to live with it. 
My trust in Samsung‘s have now gone to zero if this is the way they treat and the way their products now are the four-door fridge is nice. Good concept poor quality. Would not recommend getting that fridge.