Apple AirPods 2 Battery Drainage and Connection Errors

Hey, my Airpods 2 earbuds are losing battery too quickly and having trouble staying connected. Even though I explained the problem to the authorized service, they basically told me that I wouldn't be able to get the same level of performance as I did on the first day. I want my device to work as well as it did when I first got it. When I told them about it, they kept saying there was nothing wrong with my device. I need help to sort out this issue. Phone number: 0545*****21