Unprofessional conduct, including; late billing, not returning calls, false promises for rebate, unorganized practice. No invoice at time of install or even after calling and requesting one. Next call from them was threatening collection. Ended up driving to their office and paying and was not eligible for Ut Power rebate due to time lapse in billing. Company used promise of rebate to up sell me from R36 to R50 insulation. Would not return numerous calls (5) and two trips to the business. I feel it is there fault I missed out on this rebate. Tried to settle this with Superior insulation representative and she stated "thanks for your business, there is nothing we can do."