Disconnection sms - arrangement exists

Good day<br> <br> I received an SMS today to pay all arrears or disconnection will ensue. <br> There is a prior payment of arrears arrangement made with your management 3 months ago. You will notice a payment in excess is made every month which is for the arrears. <br> I don't want to repeat the whole story but the arrears arose because your systems debited the wrong account and I was only notified of the arrears 4 months later through disconnection (and you guys generally disconnect pretty quickly so I was shocked you allowed 4 months of arrears). Check with your management for details - I am honoring my side and paying the arrears off. Please honor your side of our arrangement and do not disconnect. <br> <br> If you reply, do so to my email address. I have no further time to spend on something that was already discussed.