Every package that is shipped by UPS has a tracking number. With that number you can go to the UPS web site, put in the number and it will tell you where the package is.
If Dimout.com won't give you the tracking number, they never shipped it and are ripping you off.
If you paid by a credit card, contact your card holder. Tell them that Dimout has not given you your items and dispute the charges.
You'll get your money back. Good luck!