Poor service resulted in my line being suspended

I am a Cellc customer for more than 10 years. In all these years I've never had any major issues until now. The debit order was returned for June 2015 payment. I received sms from customer services on 03/Jul/2015 stating that I have to make a cash payment at Nedbank for the contract amount plus R70 fee for returned debit orders. My husband made two cash deposits on the same day. On Monday 06/Jul/2015 I emailed the deposit slips to [Email Removed] Since that Monday I have received numerous calls from the Cellc call centre agents as well as sms' saying that a payment must be made. Each time I informed them that the payments were made and the deposit slips sent to them. They said that their system takes 24 to 48 hours to update. 5 days later, I have sent SIX emails and TWO faxes to number ***, both fax deliveries FAILED and my line is suspended. I immediately called Cellc and asked to speak to a manager. I spoke to Mr Rashi Hanook.For once someone was listening.Mr Hanook said that he will assist and re-open my line.I commend Mr Hanook for the attention and quick action, he resolved everything within 24 hours! Call centre monitoring of emails/faxes needs improvement.