(2) The trustee may from time to time summon general meetings of creditors for the purpose of ascertaining their wishes, and it shall be his or her duty to summon meetings at such times as the creditors, by resolution, either at the meeting appointing the trustee or otherwise, may direct, or whenever any creditor, with the concurrence of 1/6 in value of the creditors (including himself or herself), shall request him or her in writing so to do, and the trustee shall call such meeting accordingly within 14 days: Provided that such creditor shall deposit with the trustee a sum sufficient to pay the cost of summoning the meeting, such sum to be repaid to him or her out of the estate if the creditors or the Court so direct.