Ur frustration is understandable!
1. QC for Swiss made watches normally quite good! In fact still the best in the world generally.
Only Swiss qualified watchmaker assembled watch in Swiss can label Swiss made
Like sifu above said, it's a standard procedure to use a 'glue' to tighten bracelet screw, so if more than a piece of watch hv their screw loosening likely due to design.
2. After sales service in watch industry really varies from brand to brand, from country to country, from particular service center to another service center... Generally msia nvr good in service industry except 5 star hotels... Living here so long, I nvr expect good service here, to get what I entitle always my priority, if watch faulty nvr repair or replace, I will go to tribunal.
As for ur case, mayb due to the way u demanding, they use other watch's part to repair urs rather than waiting new part from Swiss.
Seriously, I do not think they use aftermarket part for ur bracelet, ball watch bracelet never same as other watch, chance of getting after market parts is thin....