TulaCo Software Developer interview questions

First got a call from HR, we scheduled initial interview that lasted around 30 min. Then we moved to technical one, general questions about experience and some concepts, cleared this round, all went smoothly. After follow up, they told me there were not sure if they wanted to hire new developer and put my position on hold. They wasted my time for no reason. Better check if you really need new candidate before wasting someone's time.