Hello there, sorry to hear about your problem, hopefully you will be able to find some relief through the application of the information available on this forum.

Firstly, have you looked here:
http://www.physiobob.com/forum/searc...searchid=33032

Some of the topics covered in other similar cases include:
Myofascial Release Therapy
Examining Diet, Footwear, and most importantly Foot Biomechanics

It sounds like you have use many therapies, but by the sounds of it you have attempted to aggressively control the symptoms rather than attempt to get to the route of the problem, whether that is through advice (from a health practitioner) or through whatever you have read.

I would be inclined to understand more of the history of your condition:

How long since this began? What eases the symptoms, as well what aggravates them?

Hope this will get things started.,

Regards