If you are struggling with your IVA payments, you should speak to your IP and not to companies who mailshot using information contained on the Insolvency Register.
Your IP has detailed knowledge of your case, and it may be possible to offer an early settlement so long as your circumstnaces are suitable and that you just don't want to get out of paying a long-term commitment. Given your recent health scare, and reduction in your partner's salary, this may be a possibility.
Personally I would beware companies who cold call, but that is just my opinion.
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