I'm still around

I've just had (in hindsight unsurprising) not great experience with a Singapore company on their customer service and am wondering whether or not I'm being too harsh on them. Xiomi is an up and coming Chinese brand that has a fitness tracker for $20, rather than the equivalent $80+ of the US competitor products. I ordered 5 of these from China 2 days before they announced that they would be selling from Singapore on Dec 16 (they are being posted to a friend in Singapore for me). So I asked if I could get my shipping back which seemed a reasonable question (someone thought it wasn't) because if I'd bought 2 days later I could've gotten free shipping. The reply was "Nope". To which I said was just rude and their reply is well its "personal messaging" therefore informal. Do you agree?
Attached is an image of the FB conversation I had with them.
