Unauthorised money taken

I dont usually complain but I feel this I have to say as I feel fustrated & disappointed by standard bank. I've been a client of standard bank for many years & i've never had issues with them. I just found out after going through my statement that standard bank has been taking money from my cheque account without my concern. I called customer care & I was told a bizarre story that they have been trying to get hold of me but couldnt, but standard bank has been in contact with me over & over trying to sell me funeral & life covers. They asked for proof that ive got car insurance and I gave them, but still even now the money they took hasnt been refunded as they said it would be. I asked standard bank kindly reverse all debits done on my account towards hollard insurance, I didnt sign up for that insurance at all nor give them permission to debit my account as I already have car insurance cover with iwyze. Standard bank please give me my money back

Regards Alex