Vodacom Blocked My Sim After I Requested To Go Back To Prepaid After My Contract Ended For No Valid Reason

I ended my vodacom contract and the contract is supposed to end 31 May. This morning I received an sms stating that my sim was now prepaid. After that I bought 60 anynetwork minutes as I had to make an Urgent call only to find my sim is blocked and I cannot make calls anymore. I keep receiving an automated vocemail message saying my sim is blocked and I should contact my service provider everytime I try to make a call. I cant even call Vodacom customer care (the actual service provider) . I had to get a robot "Tobi" to actually help with getting someone from Vodacom to call me. The consultant I spoke to told me I had to go to the Vodacom store to get my sim Rica'd and re registered, after 10 years of Vodacom having my details on file I must still go to Vodacom to rica my sim. Does Vodacom only allow contract sims now. Can we no longer be prepaid clients? Cos I just came from the vodacom store and they told me my number is not on the system where it requires me to rica again and they did a network boost or something like that which another consultant already tried to do. Did I just go to the Vodacom shop for NOTHING!!!?? My sim STILL not working. I STILL cannot make calls. Only because I changed from contract to prepaid. IS vodacom a ****?