tickets sold out after trying website all day!!!

Flysafair ran a special today for R1 flights. I tried to get onto the website all day only to see errors. At times I would get to a certain point of booking and then get kicked out of the site. I even went as far as to select my flight but got kicked out at the payment option.<br> I view this as an invitation to purchase a flight but was denied to the suppliers lack of planning and capability to accommodate the response to the sale.<br> I am very very disappointed.