im sooooo confused.. want help please

[Banijyoti Hira]

im stuck at the stage of refinance!!! BRR done but im stuck in the next R i mean refinance 

270K refinance at 6% for 30yrs

total amount to be paid by 30yrs to the bank is 582k[270k +312k interest]

my bank will not allow me to pay it all at once [have to pay it over 30yrs acc to contract

if i sell the property now, it will be sold fr 350k 

its a complete loss

so it means im stuck till my morgage reduces over time and value of property increases, if i want to sell it and make some profit right?