As a result of persons abusing the payment mechanisms and moving credits around between members for services that have not been rendered, we have felt it necessary to stop all credit transfers between aliases by any means other than the voucher system.
It is against our Terms of Service Agreement', which you agreed to upon registering, to transfer credits for anything except that for which each method was designed.
If you are responsible for more than one profile you should create a Group. Once in a group, it is possible to make a withdrawal from all group members.
Whilst obliged to do so, if you do not create a group, there is nothing preventing you from entering the same bank details in transfer requests for different members.
To transfer credits to another member, please purchase a voucher.
There are considerable features available to Group Managers. You should read about Groups and how to set one up here.