It is easy to contact them to open a "Support Ticket". Go to the mainpage for Fusion Cash. You can get there by clicking on the "Back to FusionCash" in the upper right hand corner of this page. It will take you back to the main page and away from the Forum. There are the five tabs in the upper right hand corner: "Forum, Account, Offers, Support, Logout".
You are going to want to click on the "Support" tab of course! It will open a new page that gives you two options. The first option is to search the website for any answers that you are looking for. The second option is going to open a support ticket. I did that for my problem. If you still have not been credited, you will want to look into opening a support ticket.
This will open another page, you have to select what the support ticket is going to be for. You are going to want to select "No Credit for Offer Completion" from the drop down tab. AFTER YOU DO THIS... it will take you to a different page, make sure you read this over. It is all the offers you have done, both ones you credited for and ones you do not get credit for. At the top it will say "PLEASE CLICK HERE TO READ THE CREDIT OFFER INFORMATION PAGE" (Except not in Caps). Go ahead and do that, it will give you information on how long it takes to credit your account, why you might not have been credited, etc.
After you do that, I just hit the back button twice, to get you to the page where it looks like composing an e-mail, where you right the subject and the problem. Then all you have do is submit it.
However, I do not know how long it takes on average to get a response from them. I submitted my problem on 2/18 and still haven't heard a response. I suppose you are just going to want to be patient and see what happens. Hopefully, this information helps you. Sorry it took me so long to respond to you, I have been so busy with work!!! Good luck with everything, and good luck with your earning.