Serial No Issue -
So i had few products which did not have serial no in Pslip - most important was - Patriot DDR5 RAM, XPG Power Supply, both had long warranties.
1) Called up Amazon CC - CC was patient, understood issue, and eventually asked me to first check against warranty provider. If no reply, then they will look at it. As per them, serial no for some products is not needed, and they did not have serial no in database for these products ( or something like that)
2) For Patriot Ram, called up ananditinfotech. Guy was helpful, got reply that there is no issue. Amazon usually does not provide serial no in invoice and that wont be a problem. I had sent email few days back and they replied on it after calling.
3) Adata/XPG. Who to contact was a bit confusing at first. Product had a support slip included in box which mentioned that Acro provided warranty support but email was '
shankars@gigabyte.in'.
Gigabyte guy forwarded to some other gigabyte guy but eventually both stopped replying once they realized that product was XPG.
Eventually called Acro Mumbai and they gave number for someone in Lamington from Acro.
She said same thing as ananditinfotech - amazon does not add serial no in bill, and its ok and warranty is still valid.
4) Meanwhile, this week i successfully received a replacement from caresmith for a product that did not have serial no in bill ( i think caresmith was seller too). Was hasslefree.
Maybe one reason why this might be ok is that usually import date and bill date wont be too far apart and so warranty provider only has to extend warranty for some months beyond import date+warranty duration.
Why Asus denied warranty for someone i dont know, maybe asus support is getting bad ( as we saw with how they initially handled AMD issues )