Appliance Repairman

i called the appliance repair guys in May to fix the hinge on my oven door and stove knob. After a service call (that lasted 1 1/2 hours) they found the model number under the burner. I was told they were going to order the parts in a few days and call me to schedule the repair. I paid for the service fee of $80 dollars and waited for their call. A week went by and I had not heard from them yet. I called them and they told me that the model number they had was wrong, if I could give them the model number. I gave them the model number and waited again. As they did not return my call, I called them back. This time they said they would order the parts, but I had a put a deposit. My husband wanted to go with a different company, but as i had paid for the service fee and they would deduct it from the total charge, I decided to stick with them. BIG MISTAKE!!!! I put a deposit down of $200 and two weeks later, they still had not called me schedule the repair. I called them AGAIN, and they sent a guy named Tony to fix it. I had stepped out to get my children from school and my baby sitter let him in. After fixing the hinge, he call me to tell me he has good news and bad news. I was baffled. How can he have bad news? We are not talking about brain surgery, and after all this time... They ordered the wrong knob!!!!! I told I had to pay for the service then and they would deduct the cost of the knob ($30). I told them I was going to pay in full when the service was complete. I needed the knob. My house has been sold and I need the stove in working order as part of the Purchase and Sale agreement. I can't trust them to bring me the knob after the service was paid, as they have showed me they are not reliable. They threatened to remove the hinges, were very rude and only left after i said they were trespassing and I would call the police. The customer service rep called me and I told her that I would pay when I got the knob. That the service was not complete. She was very rude. My husband ended up paying for the full service so we could just move on. I am now stuck with finding a new knob for my stove on my own (after spending $500.00 to repair my stove and oven).