Foodland Halal Market

Halal Meat is suspiciuos. He is Selling Chicken that comes from Allen's Chicken. How Come Allen's Chicaken can be Muslim Zabihah halal. Before posting review, I did little bit of research about Allen's Chicken and couldn't find anything that verifies its Muslim Zabihah Halal. When I asked, Is it Halal he said yes its Halal and showed me Sticker on Allens's Chicken Box. When I said you should clearly display all vendors you get supply from, on that he said he has multiple Vendors but only displayed Assalam and Zenat for Chicken. He was rude in answering my all question. He is also racist as he asked about my nationality and said Bad words too and thats when I lost my Temper. This guy is tottaly unacceptable and I'll never buy anything from his shop. His meat is suspecous because he was unable to satisy my query and aggrevated me. This all happen at their Burlington MA Store