Sixt - SIXT Service - what's happening?

I've noticed in my recent conversations with SIXT call centre agents (for reservations) that the quality of the service they provide is dramatically decreasing...

I'm not really a complicated customer, and I am always friendly to the person on the other side of the phone. My recent price enquiry (for a 3-day rental for LDAR from FRA Airport) shocked me when the price was announced (EURO 480) - my susbequent enquiry as to why the price was so high, however, was met with a tone of disdain from the person on the other side of the phone.

Stupid me - I still decided to go ahead with the booking.

Unfortunately, this is not the first time this has happened... and it is becoming extremely dissatisfying (especially as the prices seem to continuously increase).

With a seperate agent a couple of days earlier I made 4 seperate bookings, including one long-term booking (45 days). For the 4th booking (a weekend) I asked whether she would give me the "NOW OR NEVER SPECIAL" (which allows the agent - at their discretion - to give the customer up to 50% off the regular rate including insurance). Needless to say, she refused, pretended not to know what I was talking about. Considering that all the other bookings were mighty expensive for what they were, I was disappointed by her refusal to accommodate my request.

I'm assuming these incidences are not unique...

For the 4th booking (a weekend) I asked whether she would give me the "NOW OR NEVER SPECIAL" (which allows the agent - at their discretion - to give the customer up to 50% off the regular rate including insurance).

I've never heard of that, but since I get 40% off the regular rate, anyway, it's not a big deal.

I pay EUR EUR 329,40 (incl. VAT and location surcharge) for 3 days of non-weekend LDAR from an airport location. And only EUR 250,18 (incl. VAT) from a non-airport location. That's because my discount does NOT apply to the location surcharge, which is calculated from the regular rate. Hence, for certain airport rentals, it may be better to use a rate that calculates the surcharge based on the already discounted price, such as DEXED000.