Recycled phone numbers

I just wanted to ask because I am in a situation now, where I have been locked out of my Instagram due to my mobile phone provider deactivating my Simcard. I have contacted Instagram support sending the images of my face to match my account but they have not replied after 2 weeks.

I was hoping that after my phone number is recycled I could contact the new owner and get them to help me. But from what you guys are discussing it seems people would stereotype me as a hacker. What next steps could I take to declare that I am a normal person or still get access to my inactive sim SMS whilst it is in the recycled mobile phone number pool?

Is there a way to buy back the phone number before it gets allocated to someone else?

Thanks