i too have had problems with online course completer's tutoring service.
1. they make you pay on their secure site, which makes it hard for you to get your money back for assignments that they scored low on. If they offered paypal, you could file a claim which would make it easier to get your money.
2. I scored an F on a test and the tutor said he would do the next assignment for free. He copied paragraphs from wikipedia and now i received an F in the course and got awarded a semester suspension. They felt no remorse and didn't refund my money.
3. after i paid for a homework assignment to be completed,they skipped some of the problems and didn't deliver the assignments on time. They said they undercharged me; i said i would make up the difference when all the work was done, but they only did a portion of the work that was skipped.
4. DO NOT USE THIS SERVICE.