Weird interview experience with Siemens

Something strange happened to me. I completed my L2 interview round with Siemens , and I felt it went well. The interviewer even mentioned that they would inform HR about the next steps. However, HR hasn't reached out since. I've tried contacting her, but there seems to be a network issue on her end. I sent an email and even a text message, but still no response, and it's been a week. What should I do in this case?"