A2a Wireless Of NY Corporation

I was overcharged on my debit card i didnt realized the lady charged me $100 to connect a $50 phone line to metro pcs. I had gone back and she had made up few excuses as to why i was charged "including tax" and how she had told me it was $100, but had told me it was $80. I had ask another metro pcs store the price to connect a phone he told me $72. She didn't want to give me my money back but gave me a coupon like as if i need phone accessory. This really upsetted me