Complaint about Repair Service at Apple Yeouido Store

I would like to file a complaint regarding the repair service at the Apple Yeouido store. On January 11th, I visited the store to have the screen color issue of my 2021 MacBook Pro repaired. The technician who assisted me at the time was very kind and explained various ways to minimize the repair costs from a consumer’s perspective. He also mentioned that since there was no issue when connecting an external monitor, the logic board seemed to be fine.

On January 13th, I received a call from the same technician, informing me that there were signs of burning on the EDP cable, which would require replacement. I agreed to this, and the technician mentioned that, if I was lucky, only the EDP cable might need to be replaced. On January 14th, I received another call from a different technician, who informed me that there was corrosion on the logic board and that the display, EDP cable, and logic board would all need to be replaced. Since the repair cost was high, I asked not to proceed with the replacement at that time, and on January 17th, I visited the Apple Yeouido store again.

This time, I was assisted by a new technician and the manager. I asked for an explanation of how the corrosion on the logic board is directly related to the screen color issue, but I was told they couldn't confirm that. I then requested that they replace the EDP cable first, and if the issue persists, to proceed with replacing the display to check if the problem would still occur. However, the manager repeatedly told me that they couldn’t do that. From my perspective, if the logic board is truly the problem, I would be hesitant to pay for such an expensive repair. However, Apple Yeouido insisted that since there was corrosion on the logic board, the repair needed to be done, and they would not replace the display and EDP cable separately as it was against their policy.

When I asked to see the document outlining this policy, the manager refused, stating that it was an internal document that could not be shown. I was unable to get any answers about how the corrosion on the logic board could be directly related to the screen color issue. Instead, I was told that because the logic board had corrosion, the only way to resolve the screen color issue was to replace the logic board, regardless of the correlation. I left the store without any action being taken and returned home.

I told them that if they could show me this policy in writing, I would accept it, but the Apple Yeouido staff refused to even show me the document. The manager seemed to be more focused on avoiding my questions, making me feel like I was being played with. Is this how Apple treats its customers? After all the years I’ve been loyal to Apple products, I feel betrayed. I am truly disappointed with Apple's repair service, and even more so with the service attitude at the Apple Yeouido store.