From mma.tv "news" page:
The name of the instructor is Marcos Roldão from the city of Porto Alegre. His academy is 'Samuray Jiu Jitsu'.
The exact allegations of the student are:
– He arrived at his new academy being a blue belt 4 stripes, but the teacher told him to remove the stripes and just train and not be concerned about that.
-Every 2,3 months occurs some kind of "promotion event where students gets the stripes or new belts."
As soon as he started the training he asked his teacher if he would take the purple belt in the next one, because if not, he wouldn't participate...
During the promotion ceremony, the students who are supposed to participate must pay one value of R$70 (seventy reais) -around 15 euros.
– In this first promotion in which he thought that would receive his purple belt, he got just one stripe.
-After that he spoke with his teacher next day, and said that he was promised that he would receive his purple belt at the next promotion event.
-However, what happened in the following event was him getting 2 more stripes.
And beside of that, he mentioned(in process)
That the teacher mocked him in front of class how he was being annoying, always asking about the belt.
The instructor showed up court wearing a purple shirt.