trunk will not open with remote or inside switch

The electric actuator inside the trunk may have failed or is not getting the proper signal to unlock the trunk. Some basic electrical tests will be necessary to begin to determine where the fault lies.

Sell your car, buy something that you can afford to keep working properly, and stop looking for the cheap way out of everything in life! Otherwise, take the vehicle to a competent repair facility, have it fixed right and quit your bitchin!