Complaining bad 😞 service and unfairly treated

Hope all is well I just had a chat with one of your agents by the name of nomndeni to cancel one of my number from contract to prepaid and I was told that it won't work as my number will be wiped out after 3 months and allocated to someone else the number in question ***, not sure how true is this I have been a loyal customer with Vodacom for years and what frustrating is that I was provided with another contract of R18 a month of which is something I am against with for really I don't want this contract I want to moved to prepaid and keep the number can you please assist me or is this not treating customers unfairly for your information please see an sms I have received " Dear Mxolisi Mbatha your quotation has been processed ***. Use the order number *** when contacting Vodacom Customer Care on 082 135 for further enquiries." You may call me on the other line *** as I am no longer having that cellphone 📱 with me it's so frustrating 💔😣😣😣