Worst network ever.

Good day

So I had a few contracts with Vodacom and have cancelled it and also requested for account to be changed to pre-paid, Confirmation has been received that the number has to be changed to Pre-paid. On the 20-09-2020 I received a statement that shows my balance is R0.00. on the 29-06-2021 I received a email stating that they drafting a summons. how can a summons be sent with no letter of demand? how can there be an outstanding balance as they loaded the debit orders as this was a open line and no debit order ever returned? why didn't they try to make contact before sending to a collections department of an outstanding balance?

Tried to make contact with the number provided they asked for a cell number added the cell number the automated machine replays they cannot pick up the number. and asks to try the number with no success no further options to speak to consultants. you just need to email and you have turn around times to wait for a reply where you want to sort a matter there and than.

The contradiction!!! worse network ever.