Ntombi has a diploma in Credit Controller from Boston City Campus & Business College (2005), FMI Practical Bookkeeping 1, FMI Certificate in the Principle of Elementary Bookkeeping, FMI Certificate in the Elementary Principles of Credit Control, and a Diploma in Practical Bookkeeping from the Financial Management Institution of South Africa (2004). She is currently doing a Bachelor of Commerce in Financial Management at the University of South Africa.
She has 11 years experience as a Financial Officer. She worked for Emd-Seven Bridges for three years as a financial clerk. She later joined Eason Group SA for two years as a credit loading clerk and later as credit loading supervisor.
From late in 2009, Ntombi joined Paypoint Holdings (Pty) Ltd as a financial administration assistant manager for three years. She joined Makone Consulting Engineers as financial officer in 2013, and she overlooks the financial affairs of the firm.