SAA operated by Mango delayed flights , wrong boarding gates!

I have been travelling for business with my company.. AS A being one of the main vendors to book flights with other than Kulula... So I book SAA and all my flights are operated by Mango.. I am not impressed over always encountered problems with mango if it's not flight delays it's wrong boarding gates printed on my ticket.. myself and my team almost missed out flight due to the wrong boarding gate... on Wednesday I had a flight home at 7:30 it was delayed till 8:35 and guess what it was a 2hour flight but I reached my destination at 11:30... I don't care about the R70 meal voucher u give us.. I booked to fly SAA not mango!