There are multiple possible reasons:
1) Wrong or incomplete address
2) Invalid phone number
3) Unable to deliver
It this condition happens, please contact us through firstname.lastname@example.org with an explicit subject on the email title so we can attend it to relative customer service specialist.
Please note that nondelivery caused by wrong delivery address or no rely to pickup notification sent by our customer service specialist in 3 business days and other personal reasons will not be taken by MeloCollection.