The price is very expensive. We paid 500TL for our apartment to be painted and that included the paint. We are having our complex (6 apts) painted later this year and our contribution is 600TL.
I think the problem you have got is that you have paid maintenance from the beginning, and paid for repairs to the property even though you do not have the tapu, so technically the property is not yours, and the people charging for maintenance and painting are seeing you as a 'soft touch'.
The first thing that I would do is to get the quotes for maintenance and the painting in writing from them.
The next thing that I would do is I would withdraw all payments to these scoundrels and see what happens. What are they going to do? take you to court? it will cost them money to do this and they would have to lay out in public what they want to charge you for, and what you have already paid.They may even have to account for other monies paid by other owners. Oh, and they would have to declare what tax (if any) they have paid to the Govt. Somehow, i don't think they will do anything, Although, you may have to develop a thick skin if you plan to visit your complex in the near future.