[itsme]

That's nothing that has to be handled by MSP.
As you already stated: don't use inconsistent CSVs.
If you use either semicolon or tab as field separator, quoting text should not be necessary. You can easily avoid that tabs or semicolons occur within field texts.
To test if a CSV is valid just open it in e.g. Libre Office Calc. If it contains misplaced field separators it will be shown obviously and it's a snap to correct them.