Vodacom Bully took my lunch money today

I requested the cancellation of my Vodacom contract and received instruction on the final cancellation fee including all the charges and everything.<br> <br> I paid it and sent them the proof and then asked them to confirm that I owe nothing more which they did. They said, \This is to confirm that the account I*** has been closed and that there is no outstanding amount owed on the account."I i said Thank you.<br> <br> Now i receive a statement that I owe R18.54. I phoned them and got the usual run around different departments because they all don't deal with that type of query etc.<br> <br> One of them said"