AIRPODS CRACK NEAR THE BASE

This is my 4th replacement pair, and without any force or drop, the magnetic metal piece (base) to about 1/4 inch is cracked. I paid good money for these and I don't want to worry about damage, when it is manufacturers defect. My guess is that it has to do with the impact when placing the airpods in the charging doc (magnet), but it should not be this fragile, especially for how much I paid for them!