2006 Honda Accord Power Door lock/Prorammable Auto-Locking

I have 2006 Honda Accord EX. Some three weeks ago I noticed that my horn was not working. I sent the car to service the horn which was done. After the service, four days after, I noticed that the keyless entry system is no more responding to all commands. I could open only the driver side with remote control while all other functions (can't open all other three doors except maunally from the button on driver door, winding down the shileds, panic, etc) not working again.

Also, when I enter and close the door, the engine on, all four doors automatically closes on their own within seconds. Possible looking the driver out of car if mistakingly out of car while the engine is running and doors closed.

What are the possible problems and how can it be corrected?