I guess you need to get a special account no from your bank (am sure zenith bank has that), you can also try to get in touch with gtbank. After which you need to liase with interswitch for further clarification. Just follow these steps, i believe you should have a link to solving the problem. Let us know your findings.

Cheers.

Abeg make you tell them say osofia na poor man wey no get money. If them beat am too much he go just die. i beg make you leave the poor man along