I've read a lot of reviews mentioning a poor experience with customer service and unanswered emails, but I can say that as of Oct 2022, these issues appear to be taken care of.
I had a problem with the delivery of my bar and emailed TPB about the issue a day or two later. They got back to me on the next business day and helped me out with resolving the issue with the delivery service. We talked options, next steps, and they even reached out to the delivery company on my behalf to see if there was anything they could fix on their end. I have chains of emails with Texas Power Bars and in every one of them, the team is willing to bend over backwards to help me out on this.
We got it resolved in about a week or so. Great stuff