R215.00 refund

They don't want to release a mere R215.00. A holding status was placed in my account for transaction that came through to my account which I was only made aware of after enquiring as to why I can't access my R215.00 I later transferred from my other account . Whilst the invedtigation is onhoing,why are they so reluctant to release my R215.00 which I transferred and of which its not even part of the investigation ??? Its so annoying