Treating Client Unfairly

I wish to express my disappointment with the service I got from Bongani Ndembe in ***** department regarding a case "alleging" that some money were transferred into my account from *****ulent sources.

My account was initially "frozen" for more than 3 weeks with a substantial amount in it, all my efforts to get feedback and answers were fruitless. I was continuously transferred from one department to the other and told that ***** department stuff are not accessible via phone except email.

After some time, that's when Bongani send an email confirming the investigations being undertaken and one and half weeks later my account was closed with very minimum explanation.

I feel cheated and not treated fairly, how do I have my issue re-looked and resolved accordingly.