iPhone has become paperweight

Phone stops syncing a couple of songs into process. Error message of either "disk cannot be read from or written to" or "the device is not connected". I have spent hours on the phone with support, no solution. I have uninstalled reinstalled itunes more times than I care to think about. I have restored the phone, erasing all of my music and videoes. There are hundreds of people with this problem on the web and APPLE is acting like it doesn't exist! When are we going to get an answer? Others have had their phones replaced only to get the same error when syncing the new phone. I didn't buy this phone with the idea that I wouldn't be able to load music or videoes onto it or that I would be spending all of my time trying to fix it with no help from the company.