I have had several poor experiences with this company, and would like to bring it to the attention of those who would be looking into lessons with Music At Your Doorstep that this is the same company, with a different name.
If you are in the Dallas, Chicago, Baltimore, Boston, New Jersey, New York, Philadelphia, or Washington D.C. area they have operations in these regions, and while I have not dealt with these branches directly, I would exercise extreme caution in getting involved with them because they are under the same ownership.
Their contact info is:
http://www.musicatyourdoorstep.com/1-800-563-8076
I was unable to find the email address for these branches, however I would assume considering the website layout is the same as that used in their South of the River Music, it would seem reasonable the email format would be visually similar to that used with the South of the River Music branding.