Impossible to get hold of Hello Peter to resolve a complain. No feedback what so ever.

Hi I see there is a very nasty review on Hello peter about myself.

The complain is incorrect and damaging and I was never given a position to prove it incorrect.

I have asked your company to remove the complain in November last year but have not had any feedback. I was never employed nor did I work for this lady.

Please advise how I should proceed to get this slander removed.