said I need to repay my taxes

customer service said I have to pay taxes before withdrawal. I paid taxes 10400 but I did it in 3 transactions and they just want 1 transfer of 10400. it doesn’t seem right since it all goes to the same account. they said I have to pay taxes again just 1 transfer not 3. so they just transferred the 3 transfer to my MT5 account. just skeptical they couldn’t pay my taxes with that money I transferred. what is going to happened if I pay taxes again in 1 time and give me another excuse.