Not annoying at all.
Sorry to hear your tale of woe and it does reinforce the importance, when purchasing an electric bike, of dealing with a reputable Company. It is certainly true that a number of the Chinese manufacturers of electric scooters source common components from the same suppliers but this does not at all mean that the overall quality of the bikes they produce is the same.
It may seem smart to buy a cheap, poor quality product from an Ebay trader but this is likely to prove costly in the long run and this tale is told countless times in various internet forums.
As you have had such a bad time, we will send you a set of our mirrors and trust that they will fit.