Haven't Received Social Security Number Yet

I applied for my social security number last march to be able to set up my medical insurance and whatnot but they still havent given me a permanent number despite accepting the documents that theyve asked for. Ive tried calling multiple times but its super complicated and since I dont really understand french that well its even harder to try to keep up with what to say/input while calling so it got me nowhere... i cant contact them through email as i need an ameli account for it(which i need my social security number for) so overall i havent been able to reach anyone. Last month i received a letter to sned in my information to get a Carte Vitale but by the time i got to it it was too late to send it back... It's a really simple process but they never sent me my certificate with the permanent number so im not sure what to do.