however funds are deposited in their group IBAN - not my individual
Maybe I'm not understanding it well, but are you saying here that you didn't deposit on your Paysera bank account with your name?
What do you mean with "their group IBAN" ?
It seems that you really sent to the wrong IBAN.
I mean and I can show you a screenshot to prove my words, they attached and deposited a transfer initiated by some randomer to my "paysera" account. I contacted them and they acted like it is not their fault, when obviously it was their fault. At the end i told them i don't want funds deposited by some randomer in my account, because tomorrow they could deposit 1000euro and I will have no clue about the source. I logged into my account again 5 minutes ago and I found second transfer, and it looks like mine transfer, however the things are not right again. Anyway the first transfer was NOT initiated by me and retards from Paysera indirectly called me scammer, when it was entirely their fault.
They didn't send a letter or phone call to apologize, just initiated another transfer to return the 1BGN to the randomer sender.
In Bulgaria most transfers are manually processed by bank clerks. I believe Paysera transfers are also manually processed. However it is a shame that they did a mistake and did not take the time to review and investigate their mistake, but tried to blame it to customer, when i contacted them.
I'll send you a PM!