Milwaukee ph55 Problems!

Anyone else having problems with this POS meter? I bought two of these, one went out after 2 months. I sent it in for repair and it was never heard from again and lost. The second is about 6 months old and now it wont calibrate. It just says WRNG when I put it in the 7.01 buffer solution.

Do any of you guys have problems with Hanna?

I got 3 ph meters... Damn things always seem a little off... I'm going Hanna next time :/