What is your water pressure like? Second, are you on a well? You may have sediment coming in from the well and it is messing up the seals. If the water pressure is too high, you could be blowing out the o-rings. Others may some other ideas. It could be that the faucet just wasn't installed correctly, or it is defective. It should be under warranty both by the plumber and the manufacturer (depending on what is the problem).