I paid Superior Asset Management in November of 2004 money to pay off a dispute I had with AT&T Wireless. They never applied the money to the bill, and I have been fighting to get t off my credit. The bill is now being handled by another bill collector, and I refuse to pay again! I have tried, with no success, to contact Superior Asset. In the meantime, I have finally found all the paperwork that I think I need to prove I have paid, which is not easy to do after so many years! How can such flimsy companies be able to have such a negative impact on our credit scores with no repercussions to them? This needs to be regulated.