product deactivated unable to activate another computer

I deactivated my product on computer 1 but when I try to activate on computer 2 it tells me it is unable to activate.  When I go out to my account it still shows my serial number still in use.   I have tried this multiple times including contacting adobe support to help me with this problem and have  not gotten a resolution, they all get frustrated and hang up on me!!!!!!!!!!!!!!!!!   How do I contact Adobe to help me and by pass there poor hired technical support ????