Thank you for the post but it didnt happen. I will list below 2 scenarios.
Scenario 1 - I loaded 20 $ credit. Ordered for a order of 24 $ which had about 8 $ shipping. In payment options, selected aliexpress pocket, Placed order and then cancelled payment. after shipping was deducted some 4 dollars were left in pocket which i used in next order.
Scenario 2 - I uploaded 50$ credit in pocket. Ordered for a order of 22 $ which had about 3 $ shipping. In payment options, selected aliexpress pocket, Placed order but the next message I got was of successful order completion and there was no option to cancel order.
Please let me know how to go with this further as in this shipping cant be deducted and order gets processed instead of Just placing order.