Managing/Tracking - Frequent, but SMALL Design/DEV Changes

Hello all.

I am having difficulty managing minor changes and small web development/web design tasks.

I a daily basis i will receive calls from multiple clients - asking for lots of small changes, or other work…

I am struggling keeping track of it.
How do you guys keep track of every request?
Is there any forms i can use?
Is there any forms you get them to fill in?
How do you keep track of everything?

The other issue is - communicating effectively what the client has requested - to the developer/designer if i am delegating the task.

What is your process?
Do you use any specific forms?
Do you have any set forms or questions you get the client to fill in each request?