Do I have consumer rights?

[Tanya Jarvis]

I hired this contractor for the second time in 2 years. Illinois has had some significant hail/wind storms and our house fell victim. We needed a roof replaced as well as one side of the house (vinyl siding). State Farm was paying him handsomely for the job. When I noticed workers only replacing certain slats instead of the whole side (as SF paid to have done), I started looking much closer at the SF claim estimate. When I confronted him, he got very defensive. Basically he got over $5000 to replace 20 slats. Our agreement (I did not know before but with research I now know is unethical) was that if I gave out his card and recommended him, he wouldn’t charge me the deductible. So, 2 big questions: Is there a maximum amount allowed to charge for materials? And is the contractor allowed to decide to charge me a deductible when previously he waived it (both in 2017 and now)? The info on here is excellent, and thank you for your help.