In the same offending SMS, Ngwenya told Aqeel Patel‚ the managing director of MRC Media, "You will bleed."
During cross-examination, prosecutor Yusuf Baba asked Ngwenya to respond to Mabena's testimony.
"I did not push her. I am falsely accused of things," he replied.
A visibly upset Ngwenya challenged the state to call a receptionist who was present when the alleged commotion took place.
"I find it strange that the person who was there was not called to come and confirm this. Bring the receptionist here. Let her come and confirm this," Ngwenya said.
Baba suggested that Ngwenya call the receptionist as his witness but he declined, saying there was no point because "she will be a hostile witness".
The trial continues.