Increasing of outstanding Balance

After you guys call me and cancel the account...Cartrack phone me again to set up debit order for the outstanding balance of R1300 after 1 week now I received this sms ...now my question is the money increase again and I receive a threat about blacklisting ....please please dont #@%$ me... If this is the way you guys operate ,I will sent my story out on all platforms ...for people to see your services ..

BLACKLISTING IMMINENT: Immediately pay Cartrack R1783 within 20 days to avoid being blacklisted. Cartrack FNB Acc *** ***. Tel: ***...