2013 Honda Accord brakes problems

While coming to a stop in my parking spot, I applied the brake and the vehicle suddenly accelerated, with engine surge /loud noise and there were no brakes...... Car plowed over parking spot barrier, into shrubs, balcony beam and neighbor's screened patio. There is considerable damage to my vehicle , shrubs, neighbor's patio and my balcony. This was a terrifying event. Investigations by insurance co and mechanic are pending at this time.

I was parked in an alley behind a coffee shop. I turned the car on and put my seat belt on and put it in gear. It suddenly lurched forward and struck a parked car one car's width from me, ricocheted and hit another parked car (which then hit the car next to it). I could not stop the car, though I tried; then I pivoted again and hit and took down the cinder block wall of a garage. I turned the car off either right before hitting the garage wall or right after. No airbags were ever released.