DSTV continues to charge me for non existent Netflix account

DSTV thinks I have forgotten about the ********** activities on my account. Every time I call them I told a supervisor will call me back, never have I received a call from them. I was charged twice for Netflix and Netflix has no idea who I am and how is DSTV charging me on its behalf. Meanwhile the only solution DSTV has given me is to cancel my Netflix account an account I do not have. An account only known by DSTV. The sad part is that I unfortunately entered a 24 months contract with DSTV and cannot cancel as I will end being blacklisted over a mess caused by them