Not happy about the service

I took a policy with sanlam 2011 and every month on the 27th their debit order goes off, yesterday i called Sanlam to enquirer about something and only to be told that I owe Sanlam Sky R1002.51. I told the consultant i was talking to yesterday that every month on the 27th i get a message to say that money was deducted, she advise that i go to the bank and ask for my bank statements from 2011 to 2016, i am not gonna do that and whose gonna pay for 5 years bank statements and anyway I dont have time to go to the bank. Not a single day i got a call or a message from sanlam to tell me that I owe them money and I dont know how can I owe you money if my debit goes off every month and it goes off on my pay day. i am so dissapointed with Sanlam i mean 5 years with you and the 1st time i call your customer care i get such news. please investigate on your side but i am not willing to go to the bank and ask for statements from 2011 thats rediculous.