Breach of personal information

In may the agents in port Elizabeth came to our enterprise asking if interested in vending with them we were told the process is 3weeks after receiving personal information ID, proof address, registration all done 3 weeks later I started receiving messages with a reference of transactions I contacted the guys in PE on 12th and 13 July they tell me oh the must look for the documents and contract cause it was never send to head office on the 13 July I received a call from head office saying it's been processed I should wait 3 weeks so I wait 12 August I call head office on the number they called from the 13 July so they say to contact them via WhatsApp which I did and send detail no response on monday 15 I call and now it's a different story the application is now pending and they no long require our application and I should not call again as there are now to many vendors in the same area so I said but since the application I've been received SMS of use of the service using my cellphone phone number she tells me to send screenshots which I did she said that it will be forwarded to customer service to be removed I asked that I'd like to know how my details are being used no response who says the application was not done for a other organization using our details because it was coming on our personal number