He explicitly claims that there was only one order - one transaction, and he did it several times, and that there were no splits into multiple parts. It sounds like someone isn't telling the truth.
Did you even ask for any evidence from the exchangers and user brett6934 to establish the facts? I assume that you do not represent the interests of your partner without checking on your part.
As we reported in the answer above, according to the information received from the exchanger, the user brett6934 created and paid for seven orders. Creating several orders in one direction in one exchanger while sending several transactions can be considered suspicious activity in splitting the deposit. Such actions are considered high-risk from the point of view of AML/CFT procedures aimed at combating money laundering and may be grounds for freezing funds and undergoing KYC. We have received the corresponding confirmations.