Recommendations for Corporate Taxes?

Hi startups! We're in the market for a new corporate tax service? We've used GBS taxkeeping in the past and loved them, but they were horrible to us this year.

They charged us for a basic tax service, and then told us that we needed to pay $350 extra (because we had over $5000 in expenses for our startup and their pricing was based on net income) after we'd already started the process with them and been working together for six months. This was even though we'd had $5000 in expenses for every previous year. We asked if they could waive the unexpected fee and they refused and then accused us of bullying them when we expressed our frustration with the unexpected expenses. They claimed that they'd "been kind" in previous years. A little confusing to see how they'd been kind since they'd simply never told us that additional expense cost extra money.

Would love to hear if anyone can recommend another company that's more transparent about pricing? Sad to see such a great company try to do dishonest upselling after having a great relationship for so many years.

Thanks for your recommendations!