I entered into an agreement to purchase a property through an online advertisement. The seller has suddenly got greedy and asking for more money since he is aware that i have misplaced my documents.
the online advertisement where he posted the price, property details, etc are still online and i want to make it a legal evidence just in case the matter goes to the police or the courts.
1. how can i ensure that the evidence is admissable in the courts
2. there is a chance that the seller may delete the evidence/ advertisement if he comes to know that i am planning something like this, so how can i protect or complete evidence against deletion
3. can the print out of the advertisement be denied in the courts, since print outs/ non authenticated documents be challenged as valid/ genuine.