Cancel and re-bill issues

Hi SAP Gurus,

Please help me to solve my below problem:

Invoice 562356891 created first, found all the values are correct. But when created the excise invoice 2315648975 dt.21st Apr '09 found the basic excise duty, cess and s.cess was calculated wrongly. Then immediately we cancelled through the billing document no. 562356921. But amount reversed double the times.

Regards,

Havina