Double billing

The driver insisted on a cash payment as he said that they had issues receiving payment from Bolt. At the end of my trip I paid him in cash. When I got home I realized that my card had been billed as well. I contacted the help line and received a response promising to look into my complaint and give feedback. When I had not heard from them after 2 days I contacted them again and have received no response since. This is such shoddy service and it's ******** to charge me twice for the same service