Nokia India — charging port damage-6.1 plus

I bought my phone, nokia 6.1 plus, 3 months back. It had developed issue with it's charging port and had been drained of all battery. I submitted it to nokia service center, vijaywada. They repaired my phn but after 15 days it has developed same issue!! I have heard that many other nokia phns are facing the same problem. Then i couldn't understand why a reputed company like nokia is not resolving this issue. And the problem arises within 3 months of buying the phone. I wish you would address this issue seriously and please replace this defective piece of my phn!!