Services actived without my consent

So I am at home, minding my business, I get an SMS from vodacom that my insurance has been activated, and that I visited their branch in Bloemfontein Lochlogan so I should rate their service. I was nowhere near their branch on the said day, and I have no idea which insurance they are talking about. Why would someone enter my profile, without my knowledge, and subscribe me to things I know nothing about? I am extremely angry.