How expensive is Deutsche Bank for long term investment compared to other Banks or investment funds here?

I started saving towards personal pension plan a year ago 3000/year with 5% increase every year via Deutsche Bank. Now I have got yearly report, and its damn expensive in my view. Almost 500 eur for Handling and 250 eur for managing fees. In the interview with person at the DB, he told me only cost is 0,5 % to investment amount, that is definitely lie now I see it. It’s obviously my mistake to believe on his words and not fully read the contract, but is it legal? My investment account made 10% return, but 25% cost cut back, that does not make any sense to me. Only good thing about this account, when you retire you save 50%on tax. My question is, is there any better alternatives that are tax advantaged and can I somehow transfer my current account to other investment accounts?