Need assistance interfacing using (CAN) .NET SDK... Need to create customers & invoices. Experienced help welcome ($)

We are using a development software named Windev (similar to VB) and wish to automate the billing process.  We basically need to check presence of client info, create new clients, create invoices and e-Mail invoices and account statements.

We are looking for experienced help in order to successfully interface with Sage 50 Canadian Edition (2017.1) using either .NET, COM or ODBC.

Thanks for your interest.