In order for you to rank up for your business marketing, buying the copper membership is the best solution. You can buy Copper membership here https://bitcointalk.org/index.php?action=credit;promote.  It cost around  0.00060479 BTC

However, if I see your trust rating, you are an account seller (not an account buyer). This means your asking for rank up is not to promote any business but to rank up your accounts to sell them. That is not considered good on this forum and that's why you have been given negative rating by the DT.