Four simple doodle style illustrations

I am an accountant and I would like to send a sales letter to prospective clients. To make it interesting I would like to include four very basic doodle style drawings to illustrate four reasons why they may not be happy with their existing accountant.

I would incorporate the drawings into the body of the letter so the more basic they are the better and they would need to be black and white line drawings, ideally without too much shading. I will need to fit all four onto one page of A4, and ideally they (in total) would only take up half of the page.

These points are:-

1. Have you felt comfortable to contact your accountant whenever you have a question without worrying that the clock is ticking and fees are accumulating?
2. Have you heard from your accountant since your accounts were completed last year?
3. Did you feel that you were charged a fair price for the value delivered by your accountant?
4. Do you feel that your accountant understands your business and the challenges that you face?

I have some ideas for some of the illustrations but I'm also open to suggestions:-

1. A person looking worried with lots of questions marks over their head.
2. A person waiting for the phone to ring.
3. A person looking at their invoice with a shocked face.
4. I'm stuck on this one - suggestions welcome!!

I would like the job to be completed in two weeks.