Help in Tx supposedly being charged with Check Fraud.

Hello,
I am frantic, I recieved a voicemail out of the blue yesterday stating that I had filed for check fraud back in July of this year and this N.H.A. legal and associates needed to talk to me. So I called this lady back and she proceeded to say that I was the one being charge with check fraud from a PayDay loan I took in April '10 for $400. They took the money out of my account to pay them back 3 days early and I didn't have the funds so I stopped payment. After multiple insulting phone calls and harrassment they finally stopped calling me. Apparently in July this year they stated they called me and have me on record saying I denied everything from who I was and the whole loan in general ( in which i never recieved call that I can recall ). So, after 15 min of her spouting off my information from ssi to the type of truck I drive I was baffeled no clue what she was saying she kept repeating I don't want to start the paperwork to supoena you I have bigger criminals to deal with. Finally I got her to tell me what she wanted and that was 522.06 paid to her with my debit card and then a 15.60 wire transfer fee. I told her there was no way I could pay that or come up with the money at 6pm at night. She proceeded to tell me that she would tell her attorney to go ahead and file the supeona and issue a warrent for my arrest in my county. I talked her into letting me call her back today after she then dropped the amt. too $417 just like that. I started to get curious and asked what N.H.A. meant and she had to put me on hold to figure it apparently and they stated this guy off google based out of vietnam. SO my overall general reason for this long drawn out paragraph is should I be worried that this "Agent Powell" from Georgia who works for N.H.A. legal who represents PayDay1 ( DSI lending in arlington, tx ) is going to arrest me!?