Account suspended

Vodacom Suspended My Account without notifying me, and after I have made an arrangement.

Vodacom made a mistake from their side, not to deduct my monthly payment for the past 6 months. I was not aware of this, until a lady from Vodacom phoned me yesterday - stating that my account was in arrears .

I have not received any sms, email or phone call from Vodacom stating my account is in arrears. I still received my monthly invoices via email - and it did not indicate that my account was in arrears.

When the lady phoned I said I will make an initial payment, and the balance will be divided in equal installments and deducted monthly.

I wrote an email to Vodacom just after the call yesterday,.. I tried to call the call center and still no response.

I know I am obligated to pay the outstanding balance. But due to an error from Vodacom side I am not able to make any calls.. without a notice.