Whenever a motion or information to revoke probation is filed, the probationer shall be entitled to a prompt consideration of such charge by the sentencing court. The court shall not revoke probation or increase the requirements imposed thereby on the probationer, except after a hearing upon proper notice where the violation of probation is established by clear and convincing evidence. The probationer shall have the right to receive, prior to the hearing, a copy of the information or written notice of the grounds on which the information is based. The probationer shall have the right to hear and controvert the evidence against him, to offer evidence in his defense and to be represented by counsel.