Hello
I can help you to set up bandwidth rate limiting on your Apache server, I do have extensive experience with Apache and its modules and directives.
Depending on which version of Apache you are running, will determine the method that can be used, in either case, it will involve compiling a module and then setting up configuration files to control the bandwidth allocation.
If you would like to get back to me with some further details including which version of Apache and which Server (OS) version you are running, we can confirm and complete the project.
Thank you
Darren