upgraded without my permission

<p>My vodacom contract came to an end on 30 September and instead of cancelling it I was offered a data plan for R60 per month for 24 months. However on 1 October when I checked my bill on your app I noticed that I had been upgraded and would be paying R230pm for a handset and data! I did not upgrade my handset so I am not sure where this came from. I called your call centre and they told me they would investigate but it is now 5 October and I have not heard anything from you. Ref S3-G891E-ETPJT. If I do not get a satisfactory answer soon I believe it is within my rights to cancel the data plan </p>