Questions:
Is the online reservations company a third party, or is it an internal department of the hotel itself?
How was the 350Rm confirmed, was it a direct confirmation (auto generated online) or was it confirmed by phone or email later on?
Possible situation:
The hotel rooms were reserved by the third party online operator, who published his rates (350RM), but who found out later on (after contacting the hotel to get the confirmation of its reservation for its client), that the published rate was no longer available. The online operator should then have informed Op and say the published rate is no longer available, but instead the rate left, is 700Rm rate. Op could then have decided to accept or cancel.
Either ways, either the hotel itself or the online operator should not have confirmed the 350RM rate, if it was no longer available.
The question only is: Who did it wrong, the hotel or a third party online operator.
The fact that the rate suddenly changed from 350Rm to 700Rm is quite common, as room rates vary along the time before being booked.
Lyndan, please, SMS is a grumpy old man who uses that excuse to his best advantage to make snap judgements and whip the poor, unfortunate misguided among us into shape. Be very thankful 
he didn't have his real gun 
(which you would have to pry from his ol' country boy cold, dead fingers). 
