Unreliable bank

I brought a voucher on my absa acc it went through twice and still gave me an error on my app saying the amount will be reversed called their call center they asked me ridiculous non related questions which I answered truthfully then they block my online profile saying they will have someone call me, went to the branch last week Monday I was told it will reverse in 5 working days but still nothing I don't understand why I should chase them to reverse my money cause on the app it clear shows that the amount went out but no voucher was issued Jonestly I have previously used fnb and capitec never experienced this ridiculous behavior