HI, I am in need of help creating a context level data flow diagram, a level 0 Data Flow Diagram, and a document flowchart for the business process scenario attached. I need to get it done very urgently (within the next 8 hours) and need help doing so.

The sales process starts with the sales department. Customers typically submit their orders through attachments in email messages or are sometimes submitted by phone. If the order is taken by phone, the salesperson will document the order in a Microsoft Word file and then print out the document. If the order is an email attachment, the attachment will be printed out. In either case, a manual document is created. The information from the order is then used to prepare a sales order. All sales are made on credit. The sales order is then forwarded to the Billing department. The salespeople also create a Packing Slip and a Stock Release form. The Packing Slip is forwarded to the Shipping Department and the Stock Release form is forwarded to the warehouse. The customer order document is filed in a file cabinet in the sales office by date. Once the Billing department receives the sales order, they use the sales order to update the sales journal database which is part of the accounting software. An invoice is then prepared for the order and sent to the customer. A journal voucher is created to record the sale and sent to the Accounting Department. The sales order is then forwarded to the Accounts Receivable department (A/R). The A/R Department receives the Sales Order document from the Billing Department and updates the customer's information in the A/R Sub Ledger which is part of accounting software. The Sales Order is then filed alphabetically in a file cabinet by customer name. An A/R Summary document is also created which details the changes made to the A/R and is sent to Accounting. After the Billing and A/R activities, the stock release form that was sent by the Sales Department is received by the Warehouse and is used to pick the goods from inventory. Once the goods are removed from the inventory, the Warehouse personnel will update the inventory part records in the Inventory Sub Ledger which is also part of the accounting software. An Inventory Summary document is also created which details the changes made to the inventory and is sent to Accounting. Meanwhile, the ordered goods and the Stock Release form is sent to Shipping Department. The Shipping Department receives the Packing List from the Sales Department and the products and Stock Release form from the Warehouse. The goods are packaged for shipping. The Shipping Department reconciles the information on the Packing Slip, the Stock Release form and the goods delivered from the Warehouse to make sure all items are correct. The Shipping Department then creates a Bill of Lading document which is joined with the Packing Slip and the ordered goods to be sent to the freight forwarder (i.e. UPS, FedEx, USPS, etc.). The Stock Release form is then filed in a file cabinet in the warehouse by date. The Accounting Department receives the Sales Journal voucher from the Billing Department and the A/R Summary Document from A/R. These documents are reconciled before an entry is made to update the General Ledger (also part of the Accounting Software). The Accounting Department also receives the Inventory Summary Document from the Warehouse so they understand the changes made to inventory. All documents received are filed in a file cabinet in the Accounting Department and sorted by date. Finally, at the end of every month, the Accounting Department reconciles the General Ledger with the balances in the Inventory and A/R Sub Ledgers. Any discrepancies are investigated with the appropriate departments