Virgin Active South Africa review: bad service ever

My Membership ended 2 years ago and I didn't want to renew it, today I get a massage from vvm attorneys says I owe R535.09 from virgin active... I am lost as I would pay my monthly installments via debit orders and why come back 2 years later to tell me I owe money that's more the the monthly payments I use to be.. I am extremely disappointed and will not want anyone close to me to join if this is how you treat your clients