Telkom Hostage

I had insufficient funds, Telkom did a debit, it bounced. I did an eft. Sent proof of payment , called Telkom and was told the payment is reflecting but it will take 48 working hours for my lines to be reconnected Is this acceptable business practice? And to rub salt into the wound, today, they put through another debit order for 1.7k For the what? I don't know. I'm phoneless and all my other 5 lines. for the past 5 days even with making payment