debit orders persecutions

It is very convenient BUT it is very difficult to find availability at the time people have free time (it was not a problem for me though) and they will never ever cancel the debit order ! I moved away from Cape Town mid February and I still have debit order on my bank account. AGAIN AND AGAIN!!! AS soon as I reverse one, next day there is another one. I am now talking with a lawyer to stop this! I have never seen anything like it ! In my country when you make a debit order you can also cancel it . In South Africa anyone putting a debit order on your bank account can charge you FOREVER!