For Each of the Following Statements, Revise Them for Clarity

For each of the following statements, revise them for clarity.
I will be using my phone to make a phone call to you on May 1^st and if you have any questions, at that time, you can ask me.
The company that I am applying to just recently not long ago hired my friend so I think a I have a pretty good chance of getting hired because he might be able to put in a "good word for me."
You know, it has been told that the company is trying to reduce waste so you must comply with the new rule that you have to recycle all your water bottles.