Bad Service and poor quality

I am dealing with Print CMYK now for a while every order of mine they keep on doing wrong. Because of there unprofessional service they are the reason that I am losing clients and I had to compromise my contracts because of them. Books are cut uneaven, orders are incorect. I am the one that has to explain to my angry clients. Today was the last nonsense. Last week I placed an order for a full color book of 30 pages. I clearly mentioned in my email that it should be full colour printed. When I went Friday to collect my order and paid with card I checked my order and all the photos in the book was printed in black and white. Shenda admitted infront of her staff that she did not read the email properly as a result of her unprofessional service i had to give a book to my client and she was devastated. I asked Shenda to print my book over and had to drive all the way back again and now it is costing me money. I send her an invoice to refund me only for my petrol money and told her that it is only the petrol money that needed to be refunded as my contract price was set out according to the price Shenda origanilly quote me on. I am very upset with her irogant and unprofessional behavior as it is not the first time something like this has happened. I will never use print CMYK again and I will warn people not to make use of there services. I have all past insedents in writing. So she paid me back the whole invoice price and now I am sitting with a wrong book, need to search for new printers and yet again she just went and do her own thing as I had specifically told her to only reimburse me with the unnecessary trip I had to take twice and yet she went and did her own thing and not what I had requested on the email.