Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Mexico chip for your Garmin

I love my Garmin and use it extensively in the US. So I purchased the chip for Mexico and was very disappointed with its performance. It did not find even one of the addresses that I programed in to it in Mexico. Often it got stuck on trying to find satalites. Other times it simply couldn't find the address and so we used the old standbys of using maps and asking directions of the locals. A huge disappointment. I'm going to ask for a refund, it was worthless.