Salesforce Software Engineer interview questions

Unpleasant experience. All interview processing is informal and recruiter is not responding. I've got phone calls from their recruiters a couple of times. They walked through with me about compensation and initiate with a phone call with hiring manager. Some very basic technical questions, and they sent me a code assignment and I did it. Then once I got on site interview, all process looked good except no body came back and said result. After I reached out the recruiter that he sent back an email said they're very impressed by me but they lost headcount. The second time is almost same, except they asked me do code assignment and never came back again. Then I did the same thing ask again and after two weeks they reply with although they're very impressed by my background but they want to move to other candidates. I guess I should never try this company again since they're so bad at recruitment also I can see how mess up it can be if you go interview like this kind of company, it will waste too much time, not mentioning you may spend whole day onsite for nothing