Createspace Experience so far

So far my experience with using createspace to publish my book has been mixed. Although they do as advertised and review your work within 24 hours and have great customer service. The rest of the process seems steered towards wanting users to purchase services so you don't have to deal with the hassle. My first review said my PDF file for my cover was corrupt. This was true. After I fixed the file, reviewed the interior and ordered the proof I went back and made changes. After proofing the site would not let me continue, my ISBN number was locked. They had assigned me the wrong ISBN. This was fixed and my in changes to the interior were uploaded, I used the same cover file. They reviewed it. They said the ISBN number on the copyright page was wrong, which it was, problem is the proof had no copyright page at all, therefore no ISBN inside, so how can this halt the process when it is not a requirement? Second, they said changes they had to make changes to the cover file. The same cover file that was fine a week ago? WTF? The templates that you download are also filled with errors.