Seems like there was already a response on Cryptopia forums with a link for a recovery process - https://www.cryptopia.co.nz/Forum/Thread/6507
Hopefully their support will be able to resolve this.
Personally, I think it would be smart to program wallets so that software would auto detect if you are sending it to proper address, to catch such a mistake before it becomes fatal. To take it a step further, a system would send smallest amount possible to that address and if transaction is successful, send the rest 99.99%.
OP included transaction ID:
Amount is showing 0.7543611
Hopefully their support will be able to resolve this.
Personally, I think it would be smart to program wallets so that software would auto detect if you are sending it to proper address, to catch such a mistake before it becomes fatal. To take it a step further, a system would send smallest amount possible to that address and if transaction is successful, send the rest 99.99%.
How many BTC did you send? 
OP included transaction ID:
Quote from: askarisyed
Transaction ID: 27ddeac780978f24d49b493cc9b6b819a6d819e2d9c406fd5f1673246da814f7
Output address: 1DJheE2EGZsyXRG8SfeTtivSgbezL34bGB
the address I sent my bitcoins to is: 1EqkMgZaR8vaPQJ1gHjbNY75Cp9k7i1L6T
https://blockchain.info/address/1DJheE2EGZsyXRG8SfeTtivSgbezL34bGBOutput address: 1DJheE2EGZsyXRG8SfeTtivSgbezL34bGB
the address I sent my bitcoins to is: 1EqkMgZaR8vaPQJ1gHjbNY75Cp9k7i1L6T
Amount is showing 0.7543611