Japan here, English customer service handled by Australia.
I went through hell getting my replacement AirPods Pro tips - after spending 20-30 on two phone calls with support, they ended up charging me $15 for a full set but they sent tips for the old IEMs instead of the the AirPods. When I called back, the call was immediately escalated to the next level of support (I wasn't rude/irate or whatever) and that rep ended up refunding me for the first set (which I kept) and also sent two pairs of medium tips for the AirPods Pro, for free. ??