MEC PARTY RENTALS INC

I got a quote from them and they said that if I paid cash I could get a 20% discount and would not have to pay tax.  I met them at a local delivery and paid the delivery people cash..$1066.00.  I had them count it and when I emailed the company about receiving the cash they were $10.00 short.  I told her that I had them count it in front of me and that it was correct, so she would need to talk to her delivery people.  I neglected to read the entire invoice and the date that I had talked to one of the owners about was wrong on my invoice.  They delivered the product 1 week early and at 8:30 pm.  I called and discussed the miscommunication and she agreed that they would still deliver the following week and that she would have the guys there at 12 pm not 8:30 pm because the cater was coming at 1 pm.  Through our discussion, we discussed lowering the quantity of table and chairs and linens to meet our RSVP's.  She said not a problem, they would cut us a check.  Because of the miscommunication, I agreed to pay them $150.00 for their travel trouble.  They wanted $200.00 and I said that because of the late delivery, I would only pay $150.00.  So, we figured it out and after all the changes with the quantities needed (100 less chairs at $1.25 each, 10 tables at $7.50 each, 10 linens at $5.50 each and we added 2 table skirts at $22.00 each.) So, before they deducted the $150.00 for the wrong delivery date they would owe me $164.00.  I said I would send the difference of $14.00 and she said not to, that it was a wash.  When they delivered on time the following week, August 16th 2013, the delivery driver said that he could not take anything off the trailer unless we paid him $150.00 cash.  I told him that he needed to talk to Kay and she would confirm that we were all squared away, but when he did, she said that I would owe them the $150.00 cash or they would take the stuff back.  I had no choice, they got very angry as did I and I told them I would pay them $60.00 cash and the rest on a credit card, but the $150.00 was nothing compared to what they would lose in business because of the scam they just ran. 
Important to know, they delivered the tables and chairs on an open flatbed trailer. The white chairs were filthy and the tables were junk.  The delivery driver said it was because of the roads..no kidding!