Hi Tze Hui,
Thank you for your reply.
The items will be shipped out to you via normal mail, not courier.
We will ship out the replacement case to you immediately today.
If there are no postal delays, you should receive it in your letterbox within 1-5 working days.
We will also include a return envelope + stamp for you to return the wrong item to us. Once you’ve received it, please place the wrong item into the envelope, seal it up and post it off at any SingPost posting box or post office.
Let us know if you have any questions.
BANN & CO.