The House Bank functioned according to rules that were different from the laws governing deposit institutions. The facility was then operated under very loose rules by using a pencil-and-ledger system, rather than a computerized accounting system. Also, the bank manager did not provide regular account statements to House members, and notifications were not sent to House members who had overdrawn their accounts. Further contributing to the problem was that House Bank did not post deposits in a timely manner, often as much as seven weeks after the fact. Those factors meant that although some knowingly took advantage of the system and were ultimately convicted of wrongdoing, many members of the House who wrote overdrafts were not actually at fault since it was the House Bank's responsibility to post deposits in a timely manner.