Hi gtony and welcome to the forum
It is disappointing that your IP firm is being so unresponsive. This is not acceptable as they are being paid good fees for looking after your case. Who are you using?
Notwithstanding this, however, it is quite normal (albeit irritating) for creditors to claim that they have received no notification of the IVA - when perhaps they, themselves, have an internal communications problem. I feel that it is unlikely that your IP will not have circulated creditors.
Try and speak to the IP personally to express your concerns, as it is probably members of staff you are speaking to relatively low down the chain of command at present.
Regards, Melanie Giles, Insolvency Practitioner for over 20 years.
For further details contact me at
http://www.melaniegiles.com and view my IVA blog at:
http://melaniegiles.blogs.iva.co.uk