Terrible, Frustrating, Unprofessional Refund Process!!

Terrible, frustrating service from booking.com. They do not give feedback on my refund. 35 days my booking was mysteriously cancelled and I only got to know about this as I was about to check-in. How frustrating, right? It gets even worse. I got a replacement accommodation but I had to pay again, and they promised a refund within 7-10 days. I have been making regular follow-ups, calls (you have to hold 10 or so minutes - if the call drops no-one calls back despite their promises to call back), emails and their response is irritating, annoying and standard "We have already escalated this case and are waiting for the response from the internal team. Please be informed that there’s no specific timeframe for this, but once we receive the reply, we will make sure to let you know the outcome". Their call center consultants **** apologies and patronize in the most annoying way. Waiting for 35 days and still counting for just feedback on whether they will repay me or not is so frustrating, and apparently there are no escalation or appeal mechanisms one can use to be heard by a higher authority. One is stuck with the helpless consultants. I will NEVER use this platform again, and I do not have anything nice to say about booking.com!