Harassment escalating

I have been complaining for months now about the harassment I'm receiving from people who are saying they are representing multichoice dstv regarding a dstv account. First of all I cancelled DSTV long time ago, multichoice stopped debiting in my account as the account was closed and I was told that it's closed. Now all of a sudden after all this years I'm told about a dstv account. Multichoice I beg you stop harassing me im not owing you anything , Now every day I'm being woken up by calls from your people. Since writing reviews no one from multichoice has contacted me regarding my complaint. I'm sick and tired of this nonsense