I would like to ask fellow FTers if it is just me or someone else has noticed an overall downtrend in rentning experience with Sixt?

To start with I'm Sixt Plat, but I'm not really renting so often. However when it comes to rent I'm always going to Sixt for last 5 years or so. Now here is my recent experience:

10-days rent in France: was supplied with a car which had some damage not reported. Had to go back and report. Few weeks after got snail mail with damage claim. Had to write an explanation letter. No reply, no news but no credit card charge either.

1-day rent in Gemany: again agent told me "this is almost new car with no damage", actually car had a few quite visible scratches. Again had to go back and report. A week later I've got invoice for rent + extra mileage. I knew for sure I haven't exceeded milege limit (500 km). I knew where I have to go and what is the distance. Otherwise I would not rent expensive SUV with mileage limit in a first place. Had to write a complain, got it resolved, got money back, and got a total mess with my accounting ref mismatching cc charges/expenses/invoices.

Now the best one. I'm renting Sixt car in Norway for several month in row (30/31 days each month) for my employees. EVERY time Sixt fails to send me a monthly invoice until secretary reminds them at least 2-3 times. NEVER they sent me a proper invoice by snail mail, despite repetitive requests. NEVER got them to enter the proper customer name and address in invoice, which makes a lot of problems with foreign VAT reclaim for accounting. Sometimes to get any answer I had to copy main Norwegian address and German address. Every month invoice is different with no explanation. The only thing they never forget is to charge credit card. Last new round was today, and I decided enough is enough, will switch to another company for this rent.

Those 3 cases are in row, there wasn't any other rental between them. The only thing Sixt has delivered to me constantly is car upgrade (except Norway, but this was understandable).

Also I've noticed that too many rentals are no longer eligible for miles, let alone that 4 times out of 5 I'm getting a better rate without logging in with Plat account.

I feel overall this a downtrend from what I remember of the past. However, maybe I'm just out of luck and 3 examples in row are not representing the whole picture?