Must be my English....
Ill try it another way:
Please be honest.Basic salary and 3 month bonus included.
You signed for how much Lira?
How much are you getting now in Lira?
How much did the agency stated the basic was when you sent your application in TL.
How much do the agencies advert now for basic in TL?
Please stop walking around the bush and give factual numbers...the agency didnt advertise a pay rise adjusted for inflation since YOU signed.