I believe you're referring to the standard customer service?You can try your hardest and keep calling in to their outsourced Philippines CSR's until your head explodes, but it's never gonna work. You can unlock it once Premium Sprint unlocking services go back down to about 21$, lol but I doubt they ever will. But I will say Bagel Boy, if you do have success by calling in repeatedly then please post proof to the group. I think they pretty much cracked down to all their CSR's with an internal memo telling them to just play dumb when asked for an unlock. Also, even if you were a Sprint customer and got far enough in the unlock process, every Rep usually asks for the previous owner/customers info..such as account PIN, social security, email, etc.. Best of luck man!
International services generally knows what they are doing. And for a paid off phone asking for an international unlock only they should comply.