1) whether any agreement had been entered into with Gaya Muncipal corporation or not?
2) have you misplaced the agreement?
3) was it registered?
4) if it was regd you can obtain copy from sub regsitrar office
5) you have the rent receipts proving that you are tenant . forward copies of rent receipt issued from 2005 to prove your tenancy
6) refuse to vacate . let Corporation file suit for eviction against you