Cancel, renew or resolve

My husband hasn’t been to the gym since before Covid. We have tried to cancel or settle the membership for the last 3 years. We keep getting promised that if he pays a R750 fee his membership will be renewed and he can carry on paying the monthly installment. We Cant get this confirmation emailed to us. The call centre keeps on calling and we have explained the situation numerous times. Please can someone assist. Either we need to pay the R750 and he can resume his membership or cancel and he can go to another gym. He Cant pay for a service he’s not receiving and he can’t access the gym.