If you are trying to identify the Acquirer behind these transactions and potentially make a complaint against them, I recommend contacting your bank/card issuer first.
Ask the bank's card disputes/chargeback department for the complete underlying card-network data for each transaction.
Specifically ask for:
• Acquirer Identification / Acquirer ID
• Acquirer name and registered legal entity
• Merchant ID (MID)
• Merchant name / descriptor
• ARN (Acquirer Reference Number)
• MCC (Merchant Category Code)
• Transaction ID / network transaction ID
• Acquirer country
• Payment processor / payment facilitator, if applicable
Do not only ask "Who is the merchant?" The critical information is the Acquirer Identification and the legal entity associated with that Acquirer ID.
Once you have this information, investigate the transaction itself. There are several potentially important grounds for a complaint against an Acquirer:
1. INCORRECT MCC
If the transaction was actually a casino/gambling deposit, check which MCC was used.
MCC 7995 is the specific Mastercard gambling MCC.
If a genuine gambling transaction was processed using another MCC, this can be an important issue to raise with the Acquirer/card network. The exact transaction and circumstances should be documented.
2. CASINO HAD NO LICENCE IN YOUR COUNTRY
Check whether the casino was legally licensed to offer gambling to customers in the country where you were located at the time of the transaction.
For example, if you were in Sweden, check the Swedish Gambling Authority's licence register and the operator's licence status on the actual transaction date.
An unlicensed operator + gambling transaction + potentially incorrect MCC coding is a particularly important combination to investigate.
3. WITHHELD OR REFUSED WINNINGS
If the casino accepted deposits but subsequently withheld legitimate winnings, refused withdrawals, confiscated funds, or closed the account after winnings were generated, document this separately.
Keep deposit records, withdrawal requests, dates, amounts, casino correspondence and the terms and conditions applicable at the time.
This is different from simply losing money through gambling.
AFTER IDENTIFYING THE ACQUIRER
Once your bank gives you the Acquirer ID, Merchant ID, MCC and ARN, search those exact identifiers together with the merchant descriptor.
Then contact the identified Acquirer and ask them to confirm:
1. Which legal entity was the merchant?
2. What role did the Acquirer have — Acquirer, processor, payment facilitator or Merchant of Record?
3. Was the merchant registered/approved for gambling transactions?
4. What MCC was assigned and why?
5. Was the merchant authorised to process gambling transactions for customers in your country?
6. Which casino/operator was actually behind the merchant descriptor?
If necessary, make a formal GDPR Article 15 access request to your bank and/or the identified payment company for your personal transaction data and information concerning the parties involved in processing your transactions.
The goal is to establish the complete chain:
Your transaction → ARN → Acquirer ID → Acquirer/legal entity → Merchant ID → Merchant/legal entity → Casino/operator → licence status → MCC.
That is much stronger than simply trying to identify a strange merchant descriptor.
If anyone obtains an Acquirer ID + Merchant descriptor + Merchant ID + MCC from their bank, share those identifiers here (with personal/card information removed). We can then investigate who is behind the Acquirer and the payment chain.