PHP MySQL connection help: Urgent!

So I created this little php sign up script with a mysql db, and uploaded it to a remote server. Now, other scripts that use different databases on the server are throwing errors that they are unable to connect to localhost. I tried to Kill the process and flush tables, but apparently they only have one database user and a max of 10 connections, and they are lacking in the necessary privileges to perform such actions (KILL, FLUSH). Their entire ecommerce area is now down (which gets a lot of business) and I don’t know how I am supposed to close these connections. Please help!!!