Claiming deposit from a real estate agent due to mistrust

Hi,

We are quite new in this country; only a few months. We thought that it is a good opportunity to buy a property without seeking legal advice. Unfortunately, we have attempted to buy a property, but we have ended up having more problems.

Currently, we have a dispute with the seller since we have asked our deposit back as the bank valuation came a lot less than the mutually agreed property value.

We have also experienced some other issues that have broken our trust in the real estate agent so we simply want to call off and cancel our contract.

In the contract, there is a section which sets a condition that if the valuation comes lower than a certain amount, this contract shall be cancelled and the deposit should be returned to us, but unfortunately, the amount is missing there.

I was wondering if I still have a valid case to ask my deposit while there isn't a defined amount, but the condition itself is there?