Everytime my sister transfer money from Hong Kong to Malaysia like say RM10k. Someone will deduct RM2k from her one.

SO I wanna ask whether anyone here knows the best way, the least deduction from amount way of transferring money from Hong Kong to Malaysia?

Help plz. RM2k one month, one year they wallap RM24k wey. good money for them. and our household got less RM24k. THose money is to pay for my  younger sisters education, house loan and car loan and parent medic fee.