On my 3rd HTC Pro and about to get a 4th- HELP!!

[Haris]

I am new to Sprint, to HTC Pro. switched from Verizon and had the old Treo 650. Have had the HTC Pro for 40 days and about to get my 4th phone. All phones just stopped charging, wall outlet or the computer. will not sync or charge. The techs at Sprint take apart the charging port and say the mother board went out every single time and they ship me a replacement, the new one will last 2-4 days and the same issue. I charge the phone at night on a wall charger, and then during the day charge as it syncs. Am I the lone ranger with this issue. Can I try different things, this is painful. I am even considering switching to different phone altogether.