Case Processing

My N400 Biometric appointment notice never get to me, despite my home address is correct
There friends out here, in this beautiful online community, I am going through frustrating times with my N400_Citizenship Application, and I am desperately looking out for help with regards to information about what I can do to find a genuine solution to my situation. since I applied for my citizenship on online in January 2, 2021, I got my case and receipt number and have been waiting endlessly to receive my biometric appointment notice. For a little close to 4 months now, every time I check my online case application case status, it tells me my biometric appointment notice was sent to me and I should follow a link given in their information to request a new biometric appointment notice, if I don't get the one they said they have sent me since June 18,2021. The problem is I have never gotten the biometric appointment notice they are taking about, I have been following the links they have provided to request a new biometric appointment notice. Since then I have done been following their links for 3 months and every time I requested for it, they extended the possibility of hearing from them by a month and when the time comes and I follow up with them, again they extended it to another month and so on.... When I tried calling the USCIS number I never get a live agent to address why I can't receive my biometric appointment notice, even though they said they sent it. Instead, I get an automated voice message instructing me to go through the same process I have been going through for 3 months and counting with no results. In view of my frustrating situation, I am appealing to everybody out here; if you ever experienced what I am going through and have managed to get through it, please educate me on what to do next. I have run out of ideas about how to get this situation resolved. Please help me with any valuable information. You have my appreciation in advance; THANK YOU so much!
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