Tracker debiting my bank account to pay for other people! Theif alert !!!

If i could give negative stars i would. Ive been with tracker since 2015. This year February they started debiting me 3 times a month when i only signed up for 1 contract . I called in and found out I've been paying for 2 other complete strangers named Asanda and Dlamini. This is an amount of R58 and R288.25. This month my bank account was debited with R577 when my contract statds R277. I need a refund asap or I'll take legal action against this bull**** company full of *****. 6 months of continuously debiting my account to pay for other people. Tracker Connect is ****. Im sorry . And i want my money back . And i need to know how and why i am paying for Asanda and Dlamini. What **** ***** is happening