*****ulent charges

I requested bolt with the driver called nkoari on Saturday. Driving Mazda3, Grey reg HY63XFGP. My trip to carnival city from OR Tambo was R147 when I requested which they debited immediately. To my surprise I saw the app saying driver has updated your destination.. I thought it's normal. After he dropped us off the app returned 147 and debited R257. Now I logged a query and then are telling me that the driver said we requested to stop somewhere. Which never happened. They can even check his route to see if we stopped anywhere. I will not recommend bolt ever.. rather use uber. This is what they do. When leaving carnival city another driver requested that we pay 100 more for him to come fetch us but the app said 150. I asked him why he said because it's busy.. His name is Fredreck driving Toyota corolla HC06GGP. This is unacceptable.. how do we feel safe now .