What do i need too bring to the crown attorney for False Pretences case?

I am looking too contact the crown attorney with a False pretences case


3 parts


1 nsf cheque that he know that he wrote and did not have money in account


2 cel phone contract reneged on that cose me over 1500$


3 digatel camera sead that would give me back but never did and lyed on more then 1 time onWhat do i need too bring to the crown attorney for False Pretences case?
Evidence on appropriate paper, sworn as affidavit, which will substantiate the false pretenses to the crown attorney. At the level of crown attorney, witnesses are generally never cross-examined, his apex court being essentially appellate. However, procedures vary locally from country to country (state, county, etc.)