Casetify review: No refunding after returning the items I bought as soon as I received them

I opened the package and took a look. The snappy cardholder stand was horrible to use. It could hold only one card. The phone case was the wrong size. I returned the item on 11.14 and the customer service did not get back to me until 12.6. Here is what they say:

Upon checking on our end, the voucher you used was "111123VIP," which is eligible for a Buy one get 15%, Buy two get 25%, and 3+ get 30% Off. Please be informed that the discount will be 15% on the remaining item, which is why the refund amount is USD 24.30.

To give you a proper explanation, please see the details below:

114 (the total order of items) x 25% = 85.50 (This is how much I paid)

72 (the remaining item) x 15% = 61.20

Therefore, the refunded amount is USD 24.30.

In line with this, we will pass your request to our financial department and cancel the Snappy Cardholder Stand MagSafe Compatible (PC Plate + Bottom Part) to refund USD 24.30 within 1-2 business days.

We will get back to you once the refund has been made.

If there are any further issues, please do not hesitate to get back to us and we will assist you further.

Thank you very much.