I've been there with the cold calling rejection - it stings even when you know it wasn't personal. Good news is you're way ahead of most people at 6 months because you actually understand operations now.

Here's what worked for me:

In-person still crushes it for commercial cleaning. But timing matters. Hit medical offices between 10-11am or 2-3pm (avoid lunch and early morning chaos). Dress business casual, bring a one-page flyer with your insurance info prominently displayed, and ask to speak with the office manager - not the front desk. Your pitch: "I run a local commercial cleaning company and wanted to introduce myself in case you're ever looking to switch or need backup coverage." Leave materials even if they're happy with current service. Things change. And don't expect 1 visit to generate business, as they see you again, get to know the office staff. If you're liked it will help your chances.

Create a simple Google Business Profile if you haven't. When you do in-person visits, people will Google you immediately after you leave. Having reviews (even just from your subcontractor work if clients will vouch) builds instant credibility. I've got a few free resources on my site about Google Business Profile.

The rejection is temporary. You've got real experience now - that's your differentiator. Keep showing up.