Viva Gym Breach of Contract

I am only a client for 4 months and already have major issues with Viva Gym breaking their own agreement & punishing me for it. If the agreement states 1 months notice before an increase how can you increase my Monthly subscription with no previously notification & now refuse me the service I have paid for? You break your on contract & now I am refused a service I am paying for because of your own contract breach? It is ********.