11 days and still cannot call or text

I purchased and activated a brand new phone from Straight Talk 11 days ago. I have not been able to receive or send texts and calls at all this whole time. I have talked to countless chat agents of which they have said it's a problem with my service, my sim, or the porting of my phone number. They always say they found a problem and fixed it, and nothing has ever fixed it. I have asked to escalate the problem and the chat agent just insists on troubleshooting even though we have troubleshooted probably hundreds of times at this point. I am beyond frustrated and I don't really even know what to do next.

Does anyone have any thoughts or advice on how I should proceed?