They are targetting people who have their IVAs with so called "IVA factories" where they claim they may have been mis-sold. It is not clear what evidence they have of this, or what they intend to do about any subsequent claims.
If you feel that you may have been given inappropriate advice by your own provider, the best thing to do is have a chat with them directly. You should certainly not stop making payments into your IVA, and we had been told by the IVAC that they were no longer putting this in their letters.
Which IP firm are you with, and how recently was their letter dated?
Regards, Melanie Giles, Insolvency Practitioner for over 20 years.
To have me propose an IVA for you, please visit:
http://www.melaniegiles.com/ivaEnquiry.asp
See customer feedback at:
http://www.iva.com/iva_companies/IVA_Advice_Bureau.asp