Data Flow Diagram needed -- 2

Hi,

I need a Flow diagram similar to i have attached, needs to look professional.

I need this done ASAP.

Flow is as follow
1. Customer comes
2. Merchant Terminal
3. Connects to Internet
4. Connect To Cellpay Gateway (Check if have balance)
5. Purchase Crypto
6. Issue to Cellpay
7. Assign it to Store
8. Deduct money from Wallet ( Cellpay Gateway)
9. Terminal Print / Receive Confirmation.
10 Customer get SMS, Merchant gets Email.
11. Customer gets receipt.
12. Merchant Deposit money in bank
13. Cellpay withdrew money from bank


The attach image also gives you an idea of what i am looking for.

Regards