Gave me food poisoning and didn't bother to reply when I complained

The food is very average but to be expected from the price. However a number of times it didn't smell great, and within one day there was mold growing all over the salad which seemed a bit odd. The food is always late (in 3 weeks it was over 2 hours late on 3 occasions) which makes getting to work on time impossible. The worst however is that I got violent food poisoning last Friday. This was definitely from their food as I didn't eat anything else all day. I emailed them 3 times to complain but didn't even get a response. They just stopped delivering food to me as I asked them to but haven't refunded me for the remaining portion. Super disappointed in the service!