The detective pulled from the Pistorius murder investigation says despite what has been reported about him, he is no "bungling Inspector Clouseau".
Detective Hilton Botha said he knew his work well, and had taken many cases to the High Court, reported the Daily Mail.
"Perhaps this case was too high profile. I'm just disappointed that my father and my brother, who lives overseas, had (it's hard) to hear about things I didn't actually do incorrectly," he told the Daily Mail.
"My name has been rubbished throughout the world. I was hoping that before I turned 50 I could try and find work in other places or possibly immigrate, but nobody is going to want me anymore after this."
He said while he was initially a "little bitter" about what was being said about him, it "didn't really bother him".
As for why he was replaced, Botha said it was because of evidence he failed to get hold of, like phone records and forensic reports.
"They probably felt I had made a few mistakes, which were not my fault," he said.
"I couldn't testify about evidence I didn't have in the case file. I couldn't even give hearsay testimony because I hadn't got the feedback I needed."
Botha told the Daily Mail he "stands back with respect" for the new appointment, Vinesh Moonoo, because he had 30 years' experience.
"Now we have a general (in charge). If he says he wants something done by tomorrow, it will be available by tomorrow. If he had been the investigating officer from the beginning, that case file would probably have been more complete and we would possibly have had a better bail hearing,"he said.
"My rank (detective warrant officer) is just too low for anybody. The head of the forensic team was a colonel. I tried but they wouldn't listen to me, so I think a general will run things properly."
He said during the case he was frustrated at the lack of support and cooperation he got from other police.