Misrepresenting

On the year 2012 I took a life cover policy and this year I decided to cancel it and take an investment so I call an metropolitan agent to asisst me since I took it from him. I then received my policy document later stating that I have just signed up for another life cover not an investment. I contacted the same agent for assistance in rectifying the mistake in the documents. He provided me with feedback that the issue has been sorted as it was an error on their side. After receiving my salary slip, I noticed that I'm now paying for 2 life covers. The first life cover was not cancelled and also the second was which was meant to be an investment has also started deducting and it's a life cover. I don't need both of them and I tried my level best to cancel them I even wrote an affidavit to cancell but only last month one policy was cancelled with no refunds and even now one policy is not cancelled and I tried everything that I know but was told to write another affidavit which I was told to give to ther same agent but even till this date I'm still paying for something I don't want but since I have no way to cancell it I feel exploited and abused as a client. I've done everything on my side but still no success.