Hi mate DSOL PAY and SWIPEZ 1 are from the Czech Republic - their operation was under DRAPH SOLUTIONS - the Czech National Bank closed them in January 2026 due to illicit processing.
my transactions for these were all from June/July/August - so I think if you were to do chargebacks now you would be out of the 120 day period from Mastercard/Visa.
Not really too sure what more you can do to be honest - I’ve had successful cases for DSOL PAY - but this was from a while ago.