This company request W2 and Pay Stubs before giving offer letters - Avis employé Territory Manager Teleflex

I interview with this company for a territory manager position. When I negotiated the base pay the hiring manager did not have a problem. I was called on Saturday and Sunday by the Teleflex recruiter basically re interviewing me and tying to negotiate my base salary acting like she was unaware of my requested base pay. She then emailed, called and texted requesting a W2 and pay stub, which is illegal to do in the state of CT! I spoke with the hiring manager to hear his side and he became aggressive and defensive of the Teleflex recruiter stating she was doing him a favor by calling/emailing/texting me over the weekend as well as trying to renegotiate a base pay. He told me if I was not comfortable sending my W2 and Paystub he would not be comfortable giving me an offer and would need to restart the interview process with a new candidate. I emailed both back rescinding my application and offering proof that I was telling the truth about my current pay, which was NOT REQUIRED OF ME!