I highly doubt 24/7 since the station is not open 24/7, but taxis will be on site whenever the trains arrive and depart (usually throughout the day and evening while the station is open), so if you are looking to make a train to taxi or taxi to train connection you should not have a problem. However, I'm sure the local cab company could be called and one dispatched for you in you needed one at another time when the station is closed.