Disappointed Vodacom *****

My husband has had his vodacom account since 1996. We decided to have an extended trip to America. He went to vodacom in Broadacres to cancel contracts he wasn't using and had not used in years. This was done on 1 July 2018. He was assured that everything was in order. In August his bill for the cancelled data stick was R8504.34. He then tried calling them and sent an email to them querying this. They responded asking dit a copy of his id book which he sent to them and have not heard anything from them since. He then received a sms from vodacom today saying he must pay R100 000 for this cancelled data stick. He has spent the entire day by vodacom trying to sort this out. This is shocking and I just hope this letter falls into the right hands and that this ridiculous nightmare can be sorted out soon.