Card Cancellation

I have been a Standard Bank credit card holder for the past 20 years.I am also a private banking client of theirs - for what it's worth. Recently I experienced cash flow problems and could not meet the minimum repayments. I had negotiated with the bank to pay in a minimum amount during those months however due to further constraints could not maintain those payments. However a month later when my financial situation improved , I notified the bank that I would be able to pay in the amounts due at the end of that month however they cancelled my card in that month and handed me over to their attorneys. Great way to treat a client of 20 years .