A 20kg object is not something even a fit person could throw very far. No description of the 'tank'.
I have travelled all over Thailand in my lifetime but I have yet to see an entire department store devoted to the sale of gold.
Presumably the 'heavily armed' attackers each had a howitzer on their back.
"Quick, let's jump in this boat and paddle down the coast to Malaysia, the Coastguard will never catch us" 😋