Nco financial systems claiming information was not received
I have mailed out a wage verification form as well as copies of all monthly bills, copy of my lease in addition to a copy of my 2009 tax return information. NCO claimed they "didn't receive" the above metntioned documents. I then faxed over 25 pages of bills, lease, 2 most recent pay stubs, 2009 tax information, etc. Again they claimed they "didn't receive" the information. They are threatening to garnish my wages because I "didn't provide them with information which they requested". Is this legal? I know they can garnish wages if you don't comply, but I have. I also the confirmation pages from the fax transaction and all results came back with an "ok" on my end, yet they are still claiming they "didn't receive" the information. What are my rights? And what can be done about this?