Smartops fleet ****

I started driving bolt mid February and I signed up in end of March, they said to complete the process I need to open an account with fnb,which I did not do. May they migrated my bolt account and I send them an email to cancel my subscription,they said they will process my cancelation. July I get an email saying my account is approved, I send them an email to cancel and still no response. August I get another email containing an invoice that I owe them R180.