eDreams complaint: Unlawfully and unethically refused full refund

I recently bought return tickets to Germany with the flexible travel dates insurance. Soon after, I requested to change the dates to the 12th and 15th of January 2023. I got a phone call from a lady from eDreams acknowledging my request. She said I have to buy new tickets and then I’ll get an invoice and email to refund me the cost of the original tickets and asked if I’d like to do that myself or she could do it for me over the phone. I asked her to do it for me and she took payment. Then I get an email with ation of the wrong flights for 5x the price!! I suppose there could have been a misunderstanding but she made a mistake. I asked for the flights from Standstead to Bremen for £27.11 not Heathrow to Hannover at £142.85! I have since phoned up twice speaking to different members of staff who just read from a script and offer me less than a full refund, saying if i cancel I don’t get a full refund. But I am not trying to cancel the flight because I didn’t even book it!! I just want my money back, all of it. Plus the full refund for the original booking of £59.66 which I processed through the insurance company as suggested. All i have had from them is an invoice. And last but not least, I cancelled my prime membership on the same phone call, yet a charge has AGAIN been made to my bank account!!! That’s £262.50 I am owed and I will not stop until I receive this in full. I am more than happy to go to court and fight this. You have stolen from far too many people.
Regards,
Ellen Stobbs
My booking reference is 10576875000