Been a month now waiting for replacement modem

on the 5th of January i reported that my new modem from mweb was not working and it was still under warranty. The mweb consultant explained that they would replace it but they were expecting stock as they were out of the modems. I have been patient but now it is the 8th of february. For how long must i wait fo my modem?Its been over 30 days of waiting as it is. I am not happy at all as this is really poor service. The consultant gave me this ref m. ***. May i please have my modem replaced ASAP otherwise i am changing my provider!!<br> <br> Kind regards