DaeJavu

I had a prepaid card and it allowed me to use it to pay for my acct and buy Linden with... I have changed jobs and have changed cards and now it will not take my card...What can I do I do not want to loose my premium acct. and not be able to buy linden. I even tried pay pal and it still wouldn't let me. Help?! Anyone?!?! (v_v)