Opinione su Travelgenio: worst service ever

I had bought a flight from SFO to Cancun with internet trough travel genio almost a year before the date of departure and just a few weeks before travelgenio has changed my itinerary from 5 and half hours flight to a 20 hours and the possibility to cancel with a refund due within 3 months . Since September 2019 I have kept calling and the told me the refund was taking longer due to Christmas and than other excuses , sometimes they hang up the phone on me after having put me on hold . i wrote customer service and facebook pages saying I will take legal action and even with that they never replay me . I will never ever use this site anymore. I f I could give a zero to the reviews