REMOVE Documents and Data... HOW!?

No, seriously... HOW.

I have tried every **** thing I could find via a google search, and I've read countless threads with countless "well, it worked for me" stories. Nothing is fixing it. I have done everything except a master reset. I have gone to icloud.com and reset D&D, I have done it through my Mac system preferences, I have managed icloud settings via my iphone, I've erased all texts and emails. Heck I deleted an email account on my phone! Nothing changed. NOTHING.

I still have 2.7GB being taken up by D&D. My iPhone4 is only 16GB, and the majority of my space (~8 or 9GB) goes to music. According to my icloud usage, I have 5GB of 5GB. I've turned off icloud and deleted the account off my phone, and deleted apps where I could. It's gotten really frustrating that I can't take a photo or update my phone with out deleting photos or music first, (I know, I know... first world problems). I only have about 30 photos on my phone, too. No videos. No voice memos, no voice mails... I just don't want to do a master reset and lose everything since I read somewhere that if you do a backup, it'll just slap the D&D right back on there. It would just be really sweet to get those 2.7GB back, but I feel like it is a lost cause since there is no real answer. I know apple support just posted a how to about a week ago for this, but I tried both methods. I tried restarting my phone. I tried backing it up again. I tried syncing it. Nothing.

Is anyone just as frustrated as I am?! And is there ANYONE that has a solid answer?