Booking a flight/holiday … BEWARE!

I recently booked 5 tickets to go to Spain through eDreams but had to cancel my ticket as I contracted Covid19 prior to departure. My refund was not in full (1st issue). I then contacted eDreams to voice my dissatisfaction and was put through to an agent. The agent gave me a link to formally lodge a complaint but when I did this is just gave me another link, one of which was back to the robot (2nd issue).