Arrears on account without communication

Virgin Active is a ******* company. DO NOT USE VIRGIN ACTIVE. I had an account with virgin active in 2022. It was settled however i am now told 3 years later that i owe them R1000 for a debit order. I was given apparently an sms in 2024 July that there is arrears. This is one sms for the entire year to tell me i have arrears, My account gets handed over in 2025 to an attorney without them even calling me before this to arrange a payment,.

DO not take membership with this company.

How can arrears be added to a debit order after you settle an account?

How can arrears not be communicated effectively to their clients?

Do you think it is fair that you only give one sms for the two years that there is arrears and now want money from people?