This company is a disgrace

Booked a flight with edreams on the 19.12.19 from Lisbon to Cape Town on the 20.12.19 and a return flight from Cape Town to Lisbon on the 01.12.2020. I paid approximately EUR 1600. In August 2020 I got an email advising that my flight got changed. I got another email in September that it got changed and in October i got an email that I will be refunded. In December I got an email that I got a refund. However no mention of amount and on my bank account I cannot see the refund. Due to Covid i expected delays so waited a couple of month before reaching out to them again. I ask if they can advise me about my refund as i haven't recieved it nor do I know the amount.the email got ignored. I then spoke to the customer service team who advised that they cannot see my flight for the 02.12.2020 and that I am not entitled to a refund as I taken the flight on the 20.12.2019. I advised that there are two flights and that I can send them my confirmation email. Every time they just hang up!( I can give you time of calls so you know I am not making things up). No money for the flight they have cancelled and no one that wants to help me with it