Stayclassy.in — phone cover for redmi note 5

I by mistakenly ordered back cover for Redmi5 instead of Reshmi Note 5.
It's my mistake, I emailed my problem, but customer care people are like we can't return or refund your product. I mean seriously how can they do like this, this is so irritating. How can they force their product on the customer?
Iteied calling customer care but every time they are putting or cutting my call. This is not fair deal with the customer. It's wrong to keep customer money and forcing them with your product. I kindly request to look after my problem and resolve it
Order no is 1878508.