In Module 2 we studied customers and vendors. In this assignment, you will assume the role of the business owner of Kristin Raina Interior Designs responding to a complaint about billing practices. Below is the message you received from a customer; your assignment is to write a professional business letter that will serve as the cover letter for an updated invoice. After the letter, please write a short summary of internal control practices that should be in place to avoid this type of accounting error. Make sure to discuss how this error could be avoided in the future (note: an updated invoice is not required for this assignment only the business letter):

Hello Ms. Raina,

I don't know what is going on with your company. I just received a bill for 16 hours of design services and 8 hours of decorating services, I was charged $75 for both, we had agreed on a price of $60 per hour for design services and $50 per hour for decorating services, as my neighbor Jennie Gunthrie received the same deal.

I am not paying this bill, in fact I already put down a $600 payment, which isn't reflected on this invoice at all? What is going on? I need to be compensated for all of my time and if this isn't cleared up and a new bill sent out immediately, I will never use your services and would not recommend your services to anyone.

Sincerely,
Maria Omari

Information to help create letter:

Business Company Address:
Kristin Raina
Kristin Raina Interior Designs
25 NE Johnson Street
Minneapolis, MN 53402

Customer Company Address:
Maria Omari
210 NE Lowry Ave.
Minneapolis, MN 54204

I submitted the attached word file, but I got only 20%. I don't know what should I write. Please advise me about it.