Error Code 16. Phone tech support is "untrained" in this matter. HELP!

Windows 7.0 Professional - all updates installed. Purchased Acrobat Pro XI on-line from Adobe last May.  Had computer issues and now Acrobat Pro XI will not install properly. I am getting Error Code 16.  I have uninstalled and reinstalled.  I have used the Adobe cleaner tool.  I have just downloaded the program files from Adobe again and did a fresh installation.  Still will not run - Error Code 16.  Phone tech support is "untrained" in this matter.  Can someone please HELP ME?