Long story short:
on 27/02/2018 our company "Visa Concord" made agreement with Imperial Jet for a charter flight for our customer, the full payment is done soon after that.
17/03/2018 Imperial Jet could not perform a flight due to technical issues with plane, we had to urgently arrange a new charter for our customer at own cost and with own resources
after numerous email exchanges on 19/03/2018 Imperial Jet acknowledges own liability (in written) to reimburse part of the money to us.
after weeks of bringing reasons like "we can't pay because of holidays" or "accountant was out of office" they've sent a SWIFT for payment in may 2018.. and it was FAKE. money never reached us.
all above mentioned is proved by emails and documents. I highly discourage you anyone from working with them. Not only verbal promises are not kept by them, but also Contracts and Written agreements are breached.
we consider suing them in court very soon.