Update: Customer service AKA "the online people" finally got back to us. They acknowledged their mistake, and said that they would give us samosas with our next order. No thanks! No samosas (that we originally paid for) until we give you more money!? Also, they chalked up the mistake to a computer glitch. No computer glitch can account for the poor customer service.
How they could've handled it better: The lady behind the counter should've called/checked with a supervisor when we told them the order was wrong, instead of blaming the mistake on us. As a token of their mistake, they could've offered something that would entice us to return, instead of making us pay for another order, just to receive the samosas that we originally paid for. Essentially, we got nothing out of it except for a single "Sorry for your trouble". Put a timer on this business and go elsewhere.