Food Panda — poor and unsatisfactory customer service

I ordered a tandoori burger from foodpanda app, from 'the rs.19 offers' on 14th oct, 2018, and i waited for an hour for my order before contacting the support service of the app. They didn't inform me that the order hasn't processed while the status showed "in process". Also, after contacting them about my order, didn't provide me with appropriate reason for cancelling my order.
Following is the chat transcript :
(01:45:13) * visitor 34327004 joined the chat *
(01:45:15) foodpanda: welcome to foodpanda chat support! Kindly hang on for a while on the live chat window. A customer service representative will be with you shortly. Tell us how we can help you?
(01:45:36) visitor 34327004: how much time the order would take?
(01:46:00) * raven joined the chat *
(01:46:05) raven: my name is raven. Let me quickly check and resolve this for you. Please be assured.
(01:46:21) visitor 34327004: ok
(01:47:52) raven: thank you for your patience.
(01:48:26) raven: sir, are you talking to this order tandoori burger
(01:49:37) raven: are we connected?
(01:49:51) visitor 34327004: yes
(01:51:48) raven: thank you for your patience.
(01:52:03) raven: i extend my sincere apologies for the inconvenience.
(01:52:19) raven: sir, due to operational issued it's happens i assure you that next time you won't come across such kind of inconvenience.
(01:52:48) visitor 34327004: when will i receive the order?
(01:54:01) raven: sir, we will canceling your order and release the same voucher for you and now you will be able to place a new order with same voucher and also we will initiate the full amount refund in this order.
(01:55:05) raven: are we connected?
(01:56:29) visitor 34327004: this is not satisfactory
(01:58:03) visitor 34327004: i'm not going to order anything from here
(01:58:24) raven: i do understand sir, how you must be feeling right now.
(01:58:29) raven: i extend my sincere apologies for the inconvenience.
(01:59:03) raven: sir due to operational issued it's happens i assure you that next time you won't come across such kind of inconvenience.
(01:59:06) * visitor 34327004 left the chat *

I want to complaint about poor customer service (Including language mistakes)