authorised funeral plan

I have opened account with Ackermans in 2016 in Vryheid branch. I have not joined any funeral cover with them, out of the blue R100 is deducted from my account. I enquire about that R100 I was informed that I did join the cover. they promised me refund, since from 2016 but nothing have been paid back into my account. they don't keep their records for more than 5 years as required by the legislation.