Rewrite the following statements, improving them as indicated.

a) Make the following statement more positive and less blunt:

I will not pay our because you have not sent the final software upgrade. Id you do not send the right one immediately, I will not pay you at all.

b) Make the following passage friendlier:

I bought the Music Collection you advertised on TV, and, not only did it take six weeks to become available, but the downloads were in the wrong format and unusable. Can't you get anything right? I'm contesting the charge on my credit card and am deleting the worthless files.

c) Make the following passage clear and unpretentious:

With reference to your recent automobile accident, I have been unable to contact you due to the fact that I have been in Chicago working day and night on a proposal--a biggie. I should be back in the office in the neighborhood of the 15th or so. In the unforeseen and unlikely event that I should be delayed, you can utilize Mr. Strawman, of my office, who will also endeavor in your behalf.