Membership Cancelled but billing continues

***!!!...I joined Momentum Health on the 1st of September 2015.I went throuht the whole telephonic experience and million questions and finally they accepted me as client with NO exclusions on my cover and cover can without wainting period.I was admitted to Hospital a month later after the Gp found that the pain in my backside was the start of an Polidinial Cyst.Well after 4 days in an Private Hospital Momentum decided that they are not Authorising anything.4 Days!!!The reason being it was an pre existing condition,well I am sorry but everyone I spoke to said there is no way someone could last that long with the pain while waiting for there medical aid to start,anyway at the end of the day I am stuck with the Hospital bill..and worst of all..my membership is cancelled but this is the second month they took there premium of my bank account even though I called them numerous times and mailwd them..Nice ne!!!