Vodacom the useless network

My contract was fully paid and cancelled with the option not to continue on a month to month basis. This was done in June 2023. Consultant clearly understood my preference and it was done. This week I receive an sms stating that I will be handed over to debt collectors as my account is unpaid. I find this extremely frustrating and Vodacom are complete *******s. I will be taking this to the newspaper and social media as this is the second time Vodacom has done this. Worst network in SA period.