Product pictures not correct

I have order a Savvy Galaxy Sonic - the color of the bag online is blue, and I continued with my order. The bag go to me and it was purple, i phoned and the exchange was not a hassle, and the lady i spoke to ensured me she will send me a blue bag as per advertised. Another bag got to me and purple again.

Phone them again and they have arranged for the pickup of the purple bag and the lady assured me she will dispatched a new order immediately, I have asked them to send me a Black bag, dispatch has not yet taken place school starts in 2 workings days. This is very disappointing with they are to blame with incorrect product pictures online.