Worst service provider

I phoned Netstar on the 30th of April 2019, enquiring about the upgrade of my tracker which on Hippo website was qouted R179 and they said is R199. I got this guy and he assisted me but he adviced that I have to buy the tag and the panic button from a fitment centre which I did not understand why so I asked the guy to call me back later around 4pm. I waited for the guy to call but he never did. On the 3rd of May 2019 I woke up to a bank notification that Netstar debited R234 from my bank account. For what, I also do not know. My cover with them used to be the one for R99. I never agreed with anyone to upgrade it but they already debited R234 and I do not have a tag and the panic button. Please explain to me as to how do you such to someone???????