I subscribed to 5g wifi with Rain 01/07/2022 I was given ZTE router as well but the router suddenly stopped working on the 1st of November, when I plug it, the lights don't turn on like it normally does, I contacted them but I am not getting any help they

I subscribed to 5g wifi with Rain 01/07/2022 I was given ZTE router as well but the router suddenly stopped working on the 1st of November, when I plug it, the lights don't turn on like it normally does, I contacted them but I am not getting any help they keep giving me different references, on the last call I made to them I was promised that they will send me replacement router but nothing happened yet the reference number given to me is ***. I need this wifi urgently as much as Rain expect payment from me end of the month I need to pay for something I benefitted from.