It's important to understand that if you are contacted by a collection officer from CBV Collections that you are most likely speaking to a convicted criminal. It is important that you do not enter any dialogue with these people, it could seriously destroy your credit when they start attaching bogus debt to your account.
If you are contacted by CBV Collections for a debt that you owe, it is important that you cut them out of the transaction and deal with your original borrower exclusively. That is the only way that you can ensure your safety and that of your personal, private information.
CBV Collections and their criminal employees are a blight on society and it is of utmost importance that you do not feed the beast, at any cost.