Refund policy mid valley Malaysia?

I bought 2 anti-odour drains and adhesive for condo im in. Turns out they are not right fit as they have a lip on them which I didn't see in the packaging.

I check the receipt for when I can return, and it says 'goods sold are not refundable'

A quick check online and some places says you can, but tbh I don't want to waste time going back if it's no.

I'm from the UK where returns are pretty standard, even though technically they can turn you away, so I'm wondering what it's like here before I go back to mid valley?