5 days ago a have exchange bitcoin on changelly - but now the transaction was rejected on their system:
https://.com/transaction/10ef21b2f312

I already make a transaction and sent my bitcoin already (but status still un-confirmation).
https://blockchain.info/tx/a047c188f5aee8b406b0028d87a18e95ddeb72127a3b35920c9aa736f89325f7.

So i want cancel this tracsaction and getback my bitcoin to my blockchain wallet- because it's fail exchange on changelly.com.
Please help me. Thank you all