Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Defective Batch

Bought three of these transmitters for family members and none of them worked even after calling and getting technical assistance. Was told by the seller that it must be a defective batch. I thought, no problem; I'll just return them for a full credit and order the recommended brand/model by the seller. Was told that I would not get a refund for the initial shipping cost ($13) and would have to absorb the shipping cost for the return. Called the manufacturer (Linear Corp) regarding the issue. They kindly issued a call tag to the seller so that there would not be a shipping cost to return the defective transmitters; however, I would still have to absorb the initial shipping cost. What?! That makes no sense. The manufacturer and seller take no responsibility for shipping defective merchandise. Now I have to buy another brand/model and pay shipping again. Welcome to crapitalism.