Advisor won’t respond?

I have emailed my advisor ,two weeks ago almost three weeks ,and was told to email a different advisor before I could speak to her. It’s almost three weeks and neither of them have replied to my follow up email regarding my situation. Because of this I was not able to register for summer courses at Collin since I needed to speak with my advisor before I take the courses at Collin. This really made me sad and ruined my day yesterday. I’m not sure what else to do since clearly emailing them doesn’t help. If anyone could provide me advice, I would appreciate it a lot.

Thank you!