Debit orders x 4 in error, breach of contract

We moved from Virgin K90 Boksburg to Planet Fitness Benoni Lakefield through Discovery. Planet Benoni debited my account in error on 4 different occasions for R1.5k in the last 5 months. As it stands today, the manager from Planet Benoni blames the admin team in Sandton and the admin team in Sandton blames the Benoni branch. The manager at Benoni has not once called me back with feedback, but the admin people in Sandton has at least called me twice to say they are waiting for Benoni. To date, nothing has been sorted and I'm still waiting, plus Planet threatens to blacklist you if you don't pay as you signed a contract, yet they debited my account in error which doesn't correspond with the contract. PLEASE JOIN VIRGIN ACTIVE! They are professional, efficient and I never struggled a day in my life with them.