human
Update 7.25: It's been a month and I haven't received the refund. I emailed them and got no response. I called them back multiple times but the manager won't come on the line. 

Update: checking my CC statement few days later, I found out that THEY ADDED A $39 TIP that I didn't give to my check!! If your server is Jonathan, do yourself a favor and triple check that you aren't being cheated! I called them and they've offered to return the tip amount along with a verbal apology.
gpt
{'overall_sentiment': 'negative', 'aspects': {'Staff Service and Behavior': [{'Extracted Segment': 'I emailed them and got no response.', 'sentiment': 'negative'}, {'Extracted Segment': "I called them back multiple times but the manager won't come on the line.", 'sentiment': 'negative'}, {'Extracted Segment': "If your server is Jonathan, do yourself a favor and triple check that you aren't being cheated!", 'sentiment': 'negative'}], 'Price and Value for Money': [{'Extracted Segment': "It's been a month and I haven't received the refund.", 'sentiment': 'negative'}, {'Extracted Segment': "checking my CC statement few days later, I found out that THEY ADDED A $39 TIP that I didn't give to my check!!", 'sentiment': 'negative'}], 'Other': [{'Extracted Segment': "I called them and they've offered to return the tip amount along with a verbal apology.", 'sentiment': 'neutral'}]}}