Business ProfileforAll Fenced In, LLC

During the project of installing fence was required additional material, which was 5 times higher then market price. Example 50ft of mash chain link cost $400-$500 I was asked to pay $2680 for material and also extra $3,000 for installation of that extra material (1 roll and one vinyl panel). When I asked for check with original price that check was not provided to me, I asked to take that material back and they did not do that, instead that company was bulling me asking to pay that money via sms, email and phone calls. They was pushing me, trying to scare me to put lien on my house and also was using "Fuck" word during phone calls. Project was put on hold, originally it was promised to finish that project in a week but project was stopped in November and not completed by now. I asked to return money and provide me original checks from store for all unused material, but that never happened. Since that did not happened I canceled this contract. Company is requesting me to pay 20% restocking fee per contract and $350 termination fee. I do not feel obligated to do so since no original checks was provided and their asking price for that material is 5 times higher then market price. I am very unhappy and stressed