Hello, Georgia -
According to the History section of the Onex Shoes web site,
it seems that the parent company for Onex Shoes is:
Onnik Shoe Company, Inc.
11443 Chandler Blvd
North Hollywood, CA, 91601
(Source: D&B Hoovers [a division of Dun & Bradstreet], a well-respected business intelligence company,
The only phone number I could find for the company (found on the above cited web page) is:
I suggest you call the telephone number I found. (Call during weekday business hours, Pacific Time.) Ask to be connected with Customer Service. If there is no Customer Service department ask to speak with someone in the company about how to get your shoes repaired.
If the company does not provide any repair service for its shoes, if you have not already done so, check with a shoe repair business in your area to find out if they can repair the heel of your shoe.
Personal opinion: I find it odd that the Onex Shoes web site has no "Contact Us" link.
If you are unhappy about your Onex shoes and an inability to get the shoe heel repaired, you can post your complaints about the company on several web sites:
P*ssed Consumer (TinyURL link):
Plus, you can file a complaint with the Better Business Bureau for Los Angeles, California: