The worst service ever experienced

The worst service I have ever experienced. About 3 years ago I had the same issue. I have 4 funeral policies of which there was a problem saying that I haven't paid my account for 2 months once in June and again in December but every other month my bank account has been debited as nothing was wrong. I gave them a chance to make it right but nothing clearly was done until now again I was told I'm still missing two payments for the same two months wasn't sorted out. A call centre agent told me that I'm not the only one that have the same issue I must just paid it and get on with it. I told her that I had the same issue 3 years ago and nothing was done. I have been at the main office in Pinelands and the two agents there at that time it will be sorted out and if not I want all my money back that I have spent and getting bad service the second time around just give me my money back so that I can go to another company that will appreciate their clients.