No response or action from Skywise

I booked a flight on 3 June 2015 from Cape Town to Or Tambo for 15 June 2015. However, the confirmation email had the date of the flight as 24 June 2015. Wanting to have this rectified, I emailed [Email Removed] but got no response. I tried calling but was on hold for more than 10 minutes on 2 occasions without speaking to anyone. I left my number those 2 times but noone called back as promised by their automated system. I then emailed all the addresses on their website