Suggest Remedy For Bad Calluses And Corns On Foot

hello

i have very bad calluses and corns. I have had them for years. i have a foot doctor who regulary cuts them down but they keep growing back. i have been wearing orthotics for 2 years now and the problem has just gotten worse. i have chronic ankle, leg and tail bone pain now because of this. is there any advice u could give me? I am 29 years old and a mother of three as you can imagine this problem is very dibilitating, can you help?