Contact Us. We are glad you stopped by. Name * Email * Phone Message * Submit Contact info 80 Grant Avenue, Norwood, Johannesburg, 2192Phone: +27 82 051 1000Email: info@strategicadvantage.co.za or avantgardestudio@strategicadvantage.co.za We cant wait to talk to you and see how we can be of service. We'd love to help you unlock your next stage.