Hopeless Standard Bank

I have just noticed that for 2 years when my husband died. I was given a debit card inked to me bank account. when I use the card it says on my bank statement "outstanding card authorisation" and deducted of my balance. then 2 days later the same transaction this time saying " cheque card purchase " same amount is deducted again off my statement. I have only noticed that it has been debited today that they have been doing it for 2 years. I phoned Standard twice now and nothing has been done about it. they owe me thousands because every time I use my debit card it is deducted twice off my statement balance and NO ONE IS PREPAIRED TO HELP ME, they all keep putting me through to other people. I know it has taken me a long time to notice but after the shock of my husband of 43 years just dropping dead on me from a clot in his lung. I wasn't myself and now what do I do. they all agree with me but don't know what to do I just want my money back.