Tied to a 3 month swimming contract with no service

The worst thing I have done was sign up for swimming lessons with Virgin Active Belair Northriding. There is no structure my child is left doing her own thing without any training. I expected to receive a service I paid for and I am left feeling disappointed and Frustrated. I was told by the swimming manager at the club that I can’t cancel as it is a 3 month contract. My issue is that I am not getting the service I paid for. I need to get my money back.