Amy Tinkler has accused British Gymnastics of lying in the handling of her abuse case.
The 20-year-old Olympic floor bronze medallist claimed that the investigation into her complaint was concluded in March, despite the governing body indicating it was still open in July.
In another update on Twitter, Tinkler stated that she received a response from British Gymnastics regarding posts that she made nearly two-weeks-ago on social media.
She had said that chief executive Jane Allen was "prolonging my suffering", which led to an apology from the governing body.
Head national coach Amanda Reddin has temporarily stepped aside while an investigation is underway into claims about her conduct.
Tinkler claimed she had not been given an explanation over why her complaint had been dismissed and had demanded answers within the next seven days.
"It's been 271 days since I submitted my complaint and 25 days since I was abruptly told by email that my complaint into Amanda Reddin and British Gymnastics was closed," stated Tinkler on Twitter on September 16.
"I've emailed British Gymnastics three times since asking for an explanation or summary outcome.
"I've received nothing.
"Do you think this is acceptable?
"Why is it taking so long to share information with me?"
Nearly two weeks on from that post, Tinkler provided an update which highlighted five points of contention with British Gymnastics' response.
The first stated that Allen did not reply to her personally, which the retired gymnast said was "no real surprise".
"Jane Allen doesn't use or read social media (or TV, radio or newspapers) so didn't see my questions," stated Tinkler in her second point.
She continued: "The investigation into my complaint was concluded in March 2020.
"Are you kidding me?
"Richard Evans (British Gymnastics integrity director) and his team have lied to me for over the last five months – I thought they had been.
"Richard Evans went back on his public apology to me – no real surprise, one face for public, one for private."
Stating that the investigation into her complaint was closed in March suggests that this was not an ongoing case as thought, and previous Tinkler and British Gymnastics comments contradict each other.
However, British Gymnastics said Tinkler was not told the verdict of the Reddin case because of her separate claims against South Durham gymnastics club, according to The Guardian.
That case is still going on and the governing body said it wanted to provide both results at the same time.
Evans had also explained that Allen was not on Twitter so could not respond to social media posts, the newspaper said.
In a statement made in July when Tinkler revealed she had retired due to her abuse complaint, and not injury as initially thought, British Gymnastics said: "She [Tinkler] provided full details of this complaint to us on 10 March 2020 which then allowed the investigation to proceed.
"It is at an advanced stage and we have kept Amy fully informed and provided her with the appropriate support and we will continue to do so.
"We can make no further comment at this stage in the process."
Tinkler first made her formal complaint in December 2019.
The British Gymnastics abuse scandal was uncovered after the Netflix documentary Athlete A detailed the years of systemic sexual, physical and verbal abuse placed on gymnasts within USA Gymnastics.
Since then, nations such as Britain and The Netherlands have faced criticism for similar alleged practices within their gymnastics governing bodies.
"This really stinks and my patience has run out," added Tinkler.
"I've tried to do the right thing but the people running British Gymnastics can't be trusted.
"They have let us all down, they lie, we deserve better than this.
"Change at the top must happen before the right thing will be done."
She finished her statement by pledging to share examples of her experience with British Gymnastics in dealing with the abuse complaint.
Before her retirement, Tinkler was one of Britain's future stars in gymnastics, having won floor bronze at the Rio 2016 Olympics when she was 16.