Failed to process debit order and incorrect correction followed after agreement

Vodacom has failed , for the second time, to process my debit orders and without contacting me handed the account over for collection. After being pushed from person to person, eventually a lady in Legal stated to me that my debit order details were correct, but Vodacom had for whatever reason not processed the debit order, multiple times no less.

I then agreed that a corrective debit order should be run today (4th) but I received a phone call stating that my cash deposit had not been made. This is contrary to our agreement and I suggested that the consultant sort it out on Vodacom's end, because I had spoken to enough people and had more than held up my end of the bargain - I am still waiting for any confirmation on that issue.

I can't understand why Vodacom chose not to submit the debits orders in the first place and then why an agreement was not honoured by the person to whom I spoke last week.

I am more than willing to pay the amount immediately, but surely I cannot be expected to jump through hoops, especially after an agreement has been reached.