Vodacom blocks Dual Sim functionality

This week I got a new Huawei P10 from Vodacom. I specifically selected this phone, because I travel a lot and need the dual sim function instead of travelling with 2 phones all the time. The problem was that the phone was not picking up the second sim card, I then contacted the shop where I bought it and was told by the sales lady that Vodacom doesn't sell dual sim phones and therefore they blocked this functionality. This is completely unacceptable that a company like this will do such a thing!

This is a key feature of this product and Vodacom just decided to remove it and not even tell people! Ridiculous!