Review of Radiant Taxi

I used this serivce for almost 5 years. But the recent incidents show that this is not a reliable service. Today the 15th August 2013, I have booked a vehicle at 8.00am for pick up at 2.20pm (5 hours prior) until 2.30 the vehicle didnt come. Phoned they said within 15 mins, again phoned at 2.45, said within 5 mins. They always cheats. By 2.53 recived the message thats the time vehicle has been dispatched. Driver said he is in Thunmulla junction another 20 mins to my place. Is this reliable? be careful.