Tracey, you have a hydraulic clutch and this must be put right. When you press the pedal, you are pushing fluid from the master cylinder down a steel or flexible rubber pipe that connects to the slave cylinder on the side of the gearbox bell housing. The pipe work needs to be replaced, and for the life of me I can't understand why the garage didn't do it! Eventually you'll not get any gears at all and you'll be stranded.
John
June 2009