Arron's Arron's harrasment Oxford Maine

I got a couch from Arron's almost 2 years ago I have paid over 1800 hundred dollars for it so far and don't have many payments left. I recently have not been working much do to a lot of rain and I am a logger so I can't work if it is muddy which caused me to fall behind on some of my bills including my bill with Arron's. Well I was a month behind and I spoke with Adoring and told them I would pay them when I could but it might take me a little while they didn't really like it but that's what is has to b because I am sertainly not Gana give the couch back and b out 1800 buck and not have a couch for my family. Throughout the month I was behind I received over 100 phone calls from them and they would show up at my house 2 or 3 times a day and leave 2 or 3 notes on my porch. I had every intention to pay off my past due bill when I could but after numerous  rude messages and conversation w an employee I was disgusted and did not even want to deal with them. Well the other morning my kids and my 16 year old babysitter was here at my house watching my 2 year old and my 4 year old kids when someone from Arron's started pounding on my door very loud and screaming my name and then walking around the house and banging on my back door 4 feet from where my children were naping and watching cartoons he banged so and yelled so loud idiot woke the kids up dans they were scared and screaming as was the babysitter. She took them into the bathroom and called my wife and told her some guy was peeking in the windows and banging pans yelling my wife called my naighber to come over when he got here they were pulling out. They were here for 15 plus min. the same day mabe a little whlie after they left my house II got 24 countiuous calls on my cell they would call let it ring hang up than call right back 23 times in a row.later that day when I got home my wtold and babysitter told me what had occurred and I was pissed. It wasn't 5 min after she told me this when I look out the window and see Arron's pulling up my driveway so I meet them outside. The guy got out of his truck smiling and laughing. I then asked him if he was the obese who was pounding on my door and looking in my windows and he said it wasn't him.i told them that whoever it was scared the day lights out of 3 young kids and told them to get off my property and they refused. I told them numerous times and they refused until they got the couch so told them they were not going into my house and to leave and they refused again. They informed me they were calling the cops and I said good u can wait for them a off my property and they would not go. The police got here and made them leave. What r my rights and nowi have 2 kids that run to me whenever someone k mocks on my door.what to do