Any other ideas?????

I've tried the letter (as mentioned) still no response, it continues to remain on report and I threatened legal counsel. I called them and one person was nice at first and then said, well I have to transfer you to supervisor, but it looks as if you do owe this. Then, disconnected. I have cell service only and honestly I don't think I'll get anywhere with them, so I didn't call them back and waste more minutes and money!
Here's what is on report...
Collection Agency listed
then original utility company
This is what it says on report (or at least close to it - changed only slightly in case some scum bag from c/a looks at!!

)...
Date Opened.. 3/04
Reported Since 3/09
Date of Status 3/09
Last Reported 5/09
Terms: 1 month
Monthly payment: n/a
Credit limit or original amount $79
Recent Balance $79 as of 6/09
I think the utility company is actually listed with some cb's too. the experian one I do not see it and others I'm waiting on. but I know transunion I think deleted the CA - but left the utility company on - I can't win!
This is destroying our credit!!! honestly, it is a recent baddie that is soooo untrue!!!! I'm about to sue for us not being able to get a mortgage because of this. It is crazy!
Date opened... 3/04 - what does that mean? really??? We moved in 03 to another state. The bank owned the property - even the entire year of 03 I don't think we even had to pay, but we did!!
I need some more input on this one or a sample letter - I think I had found one. I'll post it next once I retrieve and see anyone's thoughts on this.