Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Would not purchase Vitamins

When I received these vitamins in the mail there was a warning message on the bottle that stated: "This product contains lead, a substance known to cause birth defects or other reproductive harm." Upon reading this message there was no way I was taking these vitamins. I returned the product on 16 October and have yet to receive a refund from the seller over a month later. I would not recommend purchasing these prenatal vitamins. Poor customer service.