I've done hundreds or thousands of trades (selling); was scammed twice, where the scam resulted in losing the fiat and both times getting my bank account cancelled.
Discussion
That does not sound like a RoboSats issue but a fiat banking issue.
Which payment method did you use?
Only SEPA transfer, it seems, have chargebacks.
I am positive that nostr:nprofile1qqs04xzt6ldm9qhs0ctw0t58kf4z57umjzmjg6jywu0seadwtqqc75spz4mhxue69uhhyetvv9ujuerpd46hxtnfduhsz9mhwden5te0wfjkccte9ec8y6tdv9kzumn9wshszxnhwden5te0wpuhyctdd9jzuenfv96x5ctx9e3k7mf0dv4ph5 got paid through SEPA both of the times.
Better go through Wise or other companies than SEPA transfers.