Transaction Failed Message After Successful Transaction

Dear Feyi,
Thank you so much for the great plugin. It is really a great job well done.
I am using it on my site. It is working on live but with a little issue;

I observe that on the live environment, a “Transaction Failed ” message is always displayed after a successful payment, though customer’s account will be debited and the Merchant’s account credited .

After a successful payment, I get this message
“Transaction Failed:
Unfortunately your order cannot be processed as the originating bank/merchant has declined your transaction.

Please attempt your purchase again or go to your account page.”

Sorry. Your payment was not successful
Below are the details of your payment transaction:
Customer name:
Amount to be paid: 10.00
Amount actually paid: 0.00
Currency:
Payment channel:
Payment status:
Payment status description:
Merchant transaction reference Number: 1-1223-1449854918
GlobalPay reference:

Note: only the Amount to be paid and the Amount actually paid feilds will contain entry, other fields will be empty.

THE CONTENT OF THE LOG IS SEEN BELOW (I MARK XXXX TO HIDE INFORMATION)

12-11-2015 @ 17:28:40 – Generating payment form for order #1223.
12-11-2015 @ 17:28:40 – User redirected to GlobalPay with the following:
GlobalPay URL: https://www.globalpay.com.ng/Paymentgatewaycapture.aspx
Array
(
[merchantid] => XXX
[amount] => 10
[currency] => NGN
[merch_txnref] => 1-1223-1449854918
[name] => XXXXXX XXXX
[names] => Elijah Kalu
[email_address] => XXXXXXXX
[phone_number] => XXXXXXXXXXX
)

12-11-2015 @ 17:30:21 – Transaction details received on user return from GlobalPay:
Array
(
[key] => wc_order_566b07c5164ff
)

12-11-2015 @ 17:30:21 – Connecting to GlobalPay at https://www.globalpay.com.ng/globalpaywebservice/service.asmx?wsdl
12-11-2015 @ 17:30:22 – Response dump from GlobalPay Array
(
[getTransactionsResult] => <resultset></resultset>
)

https://www.ads-software.com/plugins/woocommerce-globalpay/