DISSAPOINTED

I made a booking for my mom on GREYHOUND PREMIUM to travel in luxury from Gauteng to Cape Town. Now she is on a disgusting bus on Citi liner. NOT WHAT I PAID FOR. The one cell phone number they give doesn't exists and on the other there is no answer. This is a 20 hour travel!!!!!!!!!!!!! How can they tell her that the greyhound bus is NOT coming to cape town she must stay on the Citi liner bus IF I BOOKED GREYHOUND?????