Rude manager and food that's off -mochacho eldosqaure

Absolute disappointment! Rude and arrogant manager!! We purchased cheese burger and 1/4 chicken meal yesterday only to get food poisoning thereafter, called to inform but met with the most rudest manager. Telling me it's impossible that mochachos gave my family food poisoning when that's the only meat they had! Had the nerve to say report it to who ever I want! No ethics or way of talking to customers!