need advise on hess kennedy

Thanks in advance for any help. I just signed up with Hess Kennedy. I did not know anything about them before signing up for debt settlement. Now, I see tons of bad stuff about them. I have a signed contract that spells out everything and it looks great on paper. Even though they will make a lot of money off me, over 6K, it still saves me tons and gets me out of 17K debt in 2 months of 450 and 36 months of $260. As long as my payments are made, am I ok? I know my credit will be shot but i accept that. All my debts are credit cards and the counselor said they have a working relationship with all of the companies. Should I worry or just relax and let them work for me. Thanks again for your time. I havent been able to sleep at night for a long time worrying about bills and putting food on the table. This has given me a feeling of relief but I just dont want it to be false relief.