EQS – Service costs too high?

Hello I would like to open a topic and hope that this has not already been dealt with somewhere in the depths of the forum. I have been driving the EQS 580 4matic since 10/2022 and at that time I still signed the outrageously high leasing rate, without included service. My assessment at that time was that the service of the electric car would have to be significantly below that of a burner. Wrong estimate! My service invoices are regularly higher than those of my wife, who has a GLE 350 de fahr t. How can that be? Also my questions regarding transparency of this “Service A” or “Service B”, which only appear as a collection position on the invoice, have not been answered by my dealer so far. A scoundrel, who would suspect a strategy behind it…. How do you see this?