Broadway Tax Professionals

We used Broadway Tax Professionals for our 2016 return after previously having done our return using online tools. Overall, I was not impressed with their service during the preparation time. I had absolutely no contact with the accountant and only spoke with various interns who were clearly under intense time pressure and working to complete the return as quickly as possible. The results were no savings in what we owed compared to previous years.
But much worse- several months later we were informed by the IRS that there was an error in our return and too much was requested for child care deduction. This was something I had discussed as an issue with one of the interns and clearly was a blatant mistake that I would not expect from a professional doing my taxes. I scanned and forwarded the notice to the firm over email twice as well as called and was completely ignored. I received no guidance confirming that they had indeed made an error and whether I should pay the suggested payment and penalty from the IRS. Ultimately, I had to just pay without hearing any word from them.
This is not the type of service I would expect and I would certainly be wary of using this firm. Errors should be avoidable but can happen but not responding when an error does occur is completely unprofessional and unacceptable.