Discount removed if you change a booking

I made a booking on Mango using my Momentum Multiply Discount card at 20%.<br> After transecting with my credit card I immediately realised that I made an error on the booking. I then went on <br> the Mango website and rectified the problem - being fully aware of a cost of R280 involved- this was my error after all.<br> <br> What I did not realise is that you also lose your Momentum Multiply Discount. <br> <br> Please be aware of this when you are using Multiply and Mango.<br>