iwatch still under warranty

I own a Iwatch 3 under warranty with a manufacturing defect, I took it too a Apple certified repair center in Thailand and they agreed it was a manufacturping defect but because still wanted 300 American dollars to repair to it. I took to several other authorized repair shops and was told the same thing. I talked to apple support directly and they recommended mailing it to a freind or relative in America having it repaired and mailing it back. That would cost about the equivalent amount and take up to 90 days. If i broke it I would have no issues paying for a repair. I feel like I’m being given the “run around“ by apple support, I have been transferred told multiple different stories but the bottom line is will sell their products in Thailand but will not offer a way to repair them in Thailand ( I had a similar issue with my iPhone which has the extended warranty) Can someone please recommend a realistic way for Apple to honor there “worldwide“ service? I am extremely disapointed, I buy Apple products because of there reputation and service. I have used Apple products exclusively for years and have never had a issue until I moved to Thailand

Sincerely,

Sam