Makiga sells the manual block making machines. Google them. For diesel powered machines, contact me for reference of people who hire these near your location.
Interlocking soil blocks have an advantage since you can reside inside without plastering the walls. This has a significant savings. As @GGK rightfully says, a holistic approach through careful localized design is necessary for you to achieve
As Iron Sharpens Iron, So one Man Sharpens Another.