INCORRECTLY DOUBLE-CHARGED ME AND AVOIDING CLOSING OUT ON THE CASE

Qatar's online service model is basically broken, and they have continually demonstrated they are incapable of servicing their global client base as a result. In May 2022, I boarded a 1-way flight from Cape Town International Airport to London Gatwick. At the counters, they erroneously double-charged me for x1 extra luggage to the value of $231 - of which I detected the amount go off my bank account on the 12th and 13th May. The Manager on duty had me wait 1.5hrs to manually load the charge due to their system/technical challenges - which has culminated into the headache that I currently have of following up for my money - this has been frustrating as I have contacted them via the CT and London and general contact centres - as well as on FB/Messenger, Twitter and they continue to ask me to allow them to investigate with the relevant department- 4 months later. I spoke with the Manager on duty directly via Whatsapp, and he continues to not follow through on this case. This is basically **************** and I feel frustrated as I do not know who to contact next, or which authority to escalate to as this is an infringement on my right as a consumer - the inconvenience that has been created is insurmountable and is starting to cost me in money and time querying the ongoing/never-ending matter. I want my money ASAP. This has gone on for way too long. THIS IS THIEVERY. DEFINITELY NOT FIT TO OPERATE ONLINE AS A BUSINESS.