PHP Application Server Blocked Due To CGI/PHP Overload

PHP Application Server Blocked Due To CGI/PHP Overload

I an working on a e-governance Web App made in php which has been blocked
by Server Provider. His mail reads -
DISABLED CONTENT :: CGI/PHP Overload on domainname.org
During a recent audit of the server we found the account [domainname] to
be exceeding our allowed resource usage:
Below they mentioned some of the php pages of my app which they are saying
are using excess resourcethan allowed.
#####################################
AVERAGE SERVER RESOURCE LIMITS
Memory usage may not exceed 10% per domain/file/application<br/>
CPU usage may not exceed 20% per domain/file/application<br/>
Apache connections may not exceed 30 connections<br/>
15 MySQL maximum user connections allowed<br/>
350 emails per hour, per domain
#####################################
I want to ask is there something that i can do with my programming. During
office timing, some 50-60 users might be working on it. Is this due to
concurrent MySQL connections or Apache connections.
Another important thing - this is the 2nd time this is happening this
month. A week ago the same problem occurred. My server provider suggested
me to buy a remote MySQL. So i did bought a remote MySQL and also changed
domain. Again this has happened. Only for 6-8 months this site has more
traffic. Can someone suggest what should i do.