For customer service, your manner is not good. (failed...failed...failed....)
We've got the trouble and showed the issue, u should be double check (mabye some bugs occurred that u didn't know ) & reply tenderly.
Not just say, we've tested that the result is ok, maybe is ur network not stable.(just one sentence ? without any s.. r...x.. y)
how about try another smooth way, u can say, after our Mis group re-confirmed & tested over and over, there is no error showed, would your plz try again later.
Tks for your nice comment & welcome to visit our webshop again.
Let me know if you need any further information.
Your kind understanding for this will be highly appreiciated.
Should you require assistance, please do not hesitate to let us know.
Above just my some opinions & tks for reading patiently.