I just wanted to share my experience with Chanel repair services in the event that this might be useful.
In short, I had a wonderful experience with Chanel.
I purchased a 22A black lambskin mini square flap bag from the Chanel boutique located in Waikiki, Hawaii. I used the bag less than 3 times in the span of 3 weeks, and I noticed that the stitching on the flap was so tight to the point that the leather was ripping - a similar situation as the YouTuber classicswithaquirk with her 22A fuschia mini reissue. I immediately texted my SA about the issue and visited the boutique. My SA is super wonderful. She initially thought it was normal wear and tear, but seeing how disappointed I was about the bag, she happily helped me send it out for repair. 2 months later, I was notified that the bag was back and Chanel could not fix the bag for me. I visited the shop and was given the option to return the bag, which I took. Overall, I was not expecting an exchange/return option and I am so ecstatic and pleased by Chanel's customer service!