Backbase Senior Frontend Developer interview questions

Process is consisting of several steps: 1 - Interview with HR person about yourself and the company details 2 - Simple Technical Interview 3 - Technical Task 4 - Detailed Technical Interview 5 - Director/Manager Interview 6 - Offer It seems a little bit long list but it took very short time. I was also another process with very big company and got an offer from another company but their speed and energy made me accept the offer :)

First etep was HR interview that was good somehow. Then they send me an assignment that I did taht in 3-4 days and after that I went to a interview with 2 "senior" frontend developer. It seems they are trying to catch something in my code and I answer all question except for one. And then I was qualified and went to last step and then I rejected. And the reason was '"it seems you jave not done your assignment and it has done by somebody else!!!!!!!!" Why! And why you told me when I passed the technical interview? Why should I get help from somebody else after more than 10 years experince in dvelopment?