what was that?

Hello

I...I didn't knew that such things could happened to me. let me explain. My name is Matt smith( no, I'm not the guy who plays the doctor in doctor who). I'm a 16 year old guy, I like to read stories online, I'm the type of person who likes anime, reading books, and all that type of stuff. I don't like to go outside much and make friends. I like to stay indoors and play video games or watch anime and stuff like that. My parents wanted to go out for dinner for their anniversary, so I told them I could stay home for their dinner so they can enjoy them selves for the night and do what they wanted to do. Being the responsible guy that I am, my parents agreed on leaving me alone for a couple of hour. My dad left me 20 dollars for if I got hungry to order pizza. when they left, I went to my room to play some videogames and listen to music. After an hour of playing, I got hungry and decided o order that pizza, I got the house phone and called my local pizzeria and ordered a large bacon pizza. I waited for like 26 minutes for the pizza to arrive and I was really hungry. the pizza guy showed up at like 8:29pm. he told me that the pizza was 18.99, so I told him to keep the change. I sat at the living room to see a movie and eat some pizza, when the phone started ringing. I found it very weird, but I thought it could be my parents calling to tell me that they were getting home early, so i picked it up, but it wasn't my parents, it was a deep voice, like, a middle age man, he told me to be careful, and not to go outside. i thought it was just a prank, because it happened more that you would think. I i told him to stop screwing around and to stop the joke and i hanged up the phone. The second i did this, it started to ring again and this time the man sounded pissed. He told me he was going to make me pay. i kind of got scared, but didn't really thought much about it. I just went to eat my pizza and watch a movie. 5 minutes later i heard a sound coming from the back door. i went to check it, and... it was opened. I... i was scared as fuck, I grabbed my dads gun and knife just incase, since he likes to go out to the shooting range a lot. i locked myself in my room. i heard someone at the basement, saying, "where are you boy? i just want to play" while a large metal clanked every time he walked. there's no way I'm coming out of my room, i don't know what that sick fuck wanted. i heard foot steps coming from the stairs, the sound kept getting louder and louder. i could hear the steps getting close to my room. then... everything went quiet for like 10 seconds. a huge bang came from outside my room door and it scared the shit out of me as the bangs kept getting louder and louder. I... I didn't knew what to do, all i did was grip the gun and the knife and hope that nothing happens to me. the door looked like it was going to fall and break from how hard he was knocking. a car ran up the drive way, it was my parents. i could see it because of my window, but the person that was trying to get into my room couldn't. my mom and dad entered the house and saw the basement and back door opened and got suspicious, my dad told my mom to call 9-1-1 and my dad went carefully upstairs. he say he man trying to enter my room and he tackled him. my dad pinned the guy down and started punching him. i heard his voice and got out of my room. i saw my dad pin down the man, but the man stabbed my dad in the shoulder, my dad threw him down the stairs and hold him down until the cops showed up. they did and took him in. my dad got treated for his wound , and he installed security cameras and alarms just incase. my dad bought me a gun for security. since then, I stayed alone only two more times, and with my neighbors watching to make sure no one tried to enter.