C & R Transmission

Rebuilt transmission on 2004 Ford Explorer. Total cost $2,000 est. Was not satisfied with one year warranty. (Labor free, pay for parts)
Having difficulty with tranny shifting gears, whines out in first, slams into second. Light blinking shows overdrive, does not work properly. Makes it difficult/impossible to gain any speed on hill.
How I'm treated bringing it in for repair, cost-parts, promptness, etc. may lead to review adjustment.