why can't subscribers deal with the finance depart

I pay my account via eft. all my payments went through except my October payment. this hasn't been allocated yet. I keep getting disconnected every 4 days or so. I have called in several times , spoken to about 10 different agents and 4 supervisors. each call lasts on average 25 minutes. I have to repeat my story every time. I've mailed my proof of payment 7 times. each time my case gets escalated to the finance department but that's where it ends. it's been 3 months and MultiChoice still hasn't allocated my October payment. since this incident I have high blood pressure issues.....my phone bill is sky high....my frustration levels are through the roof. seeing that the agents can't help me directly, I want to speak to the finance department but this is a no go. they are an internal office with no access to the public. UNACCEPTABLE!!! I need a person who can sort this out to contact me!