May be you can provide any proofs. Some screenshoots, transactions or anything else? Quite big exchange may be some mistake? What do you mean dont credit account?
Yeah, you have to show some necessary attachments that could back up your claim so that we will take a look into it and know the real deal of your complaints. If you are not doing this here, I hope you did it when you sent your complaints to the support of Cryptopia. I think they will respond to it a bit faster and efficiently if you are supporting your complaint with evidences. For quite some time that I am using Cryptopia, I have not encountered a single instance when I felt being scammed or cheated. I guess there were just some technical glitches involved in your case.