ANYBODYknowthe ph.#for Voice Express Voice Mail company? They've bebilling me and I do't useit?

Someone signed me up for this thing when I have no use and am wheelchair bound, so when I do go out I use my message machine. I have no use for voicemail-heck, I do not know how it works. I really need the number for this company so I can get rid of the charges-being on a fixed income, I NEED every penny.