Cannot get through!!!

I am searching all over the Internet for the cheapest flights. It gives Flysafair. But how do you make a booking if all the websites for them is offline. Trying to be a loyal customer but you don't get through at all. I don't know how to make a booking or where as I wanted to do it online but you just don't get through to them. How can you do business and such a big business as well and cant assist your customers.