Backup for Mac?

I recently attempted to set up Cox Secure Backup and downloaded the Mac client.  After it would not allow me to sign in using my User ID and password, I contacted online chat...and had a dreadful experience.  After several questions, the agent told me that Online Backup was for Windows only.  I asked why then would there be a Mac client, for which he had no answer.  

When I looked at the software page online, I now see it says the software is compatible with 10.6-10.8, though in another spot it says it doesn't work with 10.7.  Regardless...with the percentage of Mac users on 10.9 and now 10.10, it's wholly unacceptable that this software is not kept up to date.  Does Cox believe we're living in 1995?  

So..the rep tells me to contact the Online Support Team and gives me a number, which I call.  There the rep tells me to sign in without the @cox.net portion of the email address, which works great.  I click a few buttons, and it appears to start working , though I'm not sure it will finish (it's showing a little over 6.7% complete as I write this...) so I ask him about the current versions of Mac OS, and he confirms that they are not supported and company has no plans to support it...  I asked why they would abandon users who are a higher percentage today than they were when the software was supported, but he suggests I call someone on the business side of the company...  

I really don't understand the business logic of this.  In a way it's not a big issue, as i use Carbonite for back up of my system (way too large for Cox), but I had planned on using it for my wife's computer (easily within the limit).  

I think it's an idiotic business position, and I would also say that the whole customer service experience was terrible.  Cox used to be excellent, but this was horrific.  Sad to see, but at least AT&T Uverse is now available in my area.

Does Cox have any intention of supporting Mac users?