Debited twice in a space of 5 days

A tracking device was installed on my car on the 22nd of December and R52 something was debited the following day on the 23rd now today on the 28th there is another debit of R149. Why two debits? I took the R149 option so why are you debiting my account twice in one month? I was informed that the installation is free. Only a week as your client and already I am having problems aiiii. Someone better call me and explain this and while at it return my money asseblief. My car registration is DN11GJGP