multi sites error

i can no longer access to admin area after changing .htaccess & wp_config.php as directed. can support team install this for me. From the start, support team is not really helping me to set up thing correctly, instead they keep asking more questions. We could save time if you just install it for me instead of waiting for your incomplete answer. Where is the support team you promised before we sign up. I am willing to pay extra for anyone who can help me do this.