Instacart complaint: Ratings

This seriously needs to be addressed, I’m working my ass off day in day out for this app delivering groceries, I had a problem with a customer yesterday that I feel is taking from you’re company, i delivered groceries to an address and I know for a fact it was the right house, they said they didn’t receive the groceries, then instacart called me saying the customers complaining they didn’t receive them, but instacart ed it was the house, the customer still went and decided to give me a bad rating, I literally dropped down from a 5 to a 4.90 and now I can’t get any batches, this is literally my only job and you all are just making it so much harder on us workers when in reality it’s the customers, and the employees get no say or power what’s so ever, this needs to change, when these people are literally giving a complete stranger the right to shop for them.