service not rendered but paid for

Hi,i am an active member of Virgin Active Rooihuiskraal. I have been training with Personal Trainer Justin Woolven. Training was from February to May. There are though still 5 sessions outstanding since May. I have been doing constant folliw ups regarding training. I am always receiving responses but unfortunately tge responses are excuses. Todate those sessions are still outstanding. I have asked for a refund but excuses kept coming. I am now tired of exhausting more money and time on following up with him. Can i be refunded so that i can train with someone whom will prioritise my bringing business to them.<br> <br> Thanks