I have bought this product 4 months back . Now any computer is not detecting this harddisk and some beep sound is occuring . I have raised the complaint for replacement but still i will loose all my data

I was so excited to get my new backup harddrive after my previous one failed. Plugged this into my Mac and it was effortless to get it working on time machine. But then it kept on disconnecting with the message it was incorrectly turned off. I was ready to send it back.