Pathetic after service

This is the 3rd time that a Samsung agent store has avoided a repair on my device which should be covered under warranty as it is a factory fitted fault. The service from this Century City store is absolutely pathetic. They make any excuse to shy away from a repair. After 10 years i think it is time to move to the market leaders iPhone. Besides the pathetic service you get the manager who actually does not care and is not friendly at all. They inform me that the battery will be covered but send a quote for the repairs and the battery we should pay for yet it is a factory fitted fault. This is not a cheap device but rather a S7 Edge. Why bother portraying to be the best when in actual fact the service and turn around time is way below average.