What the **** telkom !!!!!

I cancellled my telkom contract on the 06 of December 2017 or so I thought ,one year later when I check my domant account ,with a R11000 dept , after I recieved my first letter ,I just thought it wasnt updated on the system ,I havent used any data and when I check the data statement it fluctuates month by month ,I am not ising the number , you really need to work on your system ,on the real