Product: Debt collection

I received a statement letter from Medical Revenue Service on XX/XX/XXXX. Notifying me that my debt from XXXX XXXX XXXX XXXX XXXX ( receiving XXXX XXXX on XX/XX/XXXX ) has now passed over to them as debt collector. 
As precaution I wanted to make sure that it was a legit company, so I took the necessary step for myself to send a debt validation letter. I hired the services of SOLO SUIT to help provide the layout of my debt validation letter. The next day I went to a XXXX store to send the letter as priority mail on XX/XX/XXXX. 
I currently received an updated letter from Medical Revenue Service XX/XX/XXXX, understanding my letter of validation and claim that I am the guarantor of the debt owed. They provided me with : The name and address of the creditor to whom the debt is currently owed, the account number used by that creditor, and the amount owed. 
If this debt started with a different creditor, provide the name and address of the original creditor, the account number used by that creditor, and the amount owed to that creditor at the time it was transferred. When you identify the original creditor, please provide any other name by which I might know them, if that is different from the official name. In addition, tell me when the current creditor obtained the debt and who the current creditor obtained it from. 
Provide verification and documentation that there is a valid basis for claiming that I am required to pay the debt to the current creditor. 
If you are asking that I pay a debt that somebody else is or was required to pay, identify that person. Provide verification and documentation about why this is a debt that I am required to pay. 
A copy of the last billing statement sent to me by the original creditor. 

State the amount of the debt when you obtained it, and when that was. 

If there have been any additional interest, fees or charges added since the last billing statement from the original creditor, provide an itemization showing the dates and amount of each added amount. In addition, explain how the added interest, fees or other charges are expressly authorized by the agreement creating the debt or are permitted by law. 
If there have been any payments or other reductions since the last billing statement from the original creditor, provide an itemization showing the dates and amount of each of them. 

If there have been any other changes or adjustments since the last billing statement from the original creditor, please provide full verification and documentation of the amount you are trying to collect. Explain how that amount was calculated. In addition, explain how the other changes or adjustments are expressly authorized by the agreement creating the debt or permitted by law. 
Identify the date of the last payment made on this account. 

Although this where they failed to clarify or respond on : Tell me when the creditor claims this debt became due and when it became delinquent. 
Have you made a determination that this debt is within the statute of limitations applicable to it? Tell me when you think the statute of limitations expires for this debt, and how you determined that. 
I would like more information about your firm before I discuss the debt with you. Does your firm have a debt collection license from my state? If not, say why not. If so, provide the date of the license, the name on the license, the license number, and the name, address and telephone number of the state agency issuing the license. 

If you are contacting me from a place outside my state, does your firm have a debt collection license from that place? If so, provide the date of the license, the name on the license, the license number, and the name, address and telephone number of the state agency issuing the license.

One BIG CONCERN and VIOLATION I saw in this recent letter to cause me to really forward this complaint was that they released back to me a list of medical procedures the hospital made during the visit of XX/XX/XXXX at XXXX At XXXX XXXX XXXX. I know this is a direct violation of HIPPA regulations. I never signed a HIPPA form authorizing Medical Revenue Service to have access to this information. Please help me delete this information from my credit file and cease all collection activities immediately.