DSTV billing a shambles for 10 years now ...

So for the 10th time in 7 years, DSTV cant get their billing right - I am not sure who is the FD but he / she needs to invest in a financial system that is less complicated than the current system. I have been paying my monthly subscription plus insurance an of course DSTV allocate the whole amount to the DSTV account and insurance remains unpaid. I have called in 4 times, instant messaged 3 times, written on HelloPeter 10 times and been to the walk in centre without any resolution. What else must I do - I cannot wait for my Fibre line to be in so that I can switch to Netflix.