Core component of SQL Server for storing, processing, and securing data
This would be an issue in MSDASQL or the NetSuite ODBC driver. Or whatever NetSuite is talking with on the other end. I'm more inclined to put the blame on the latter two.
The wait type OLEDB means that SQL Server has called the OLE DB provider, and SQL Server has thereby given up all control. Which amongst other things means that you cannot kill it.
The only thing you possibly could do to alleviate the situation from the SQL Server side of things is to uncheck "Allow in-process" the OLE DB provider, and then find a way to kill what is running the OLE DB/ODBC thing from Windows when it reaches Nirvana.
Else, you would need to talk to the vendor of NetSuite.