Faulty modem

Good day I've ordered an modem on My vodacom contract and I've struggle since January. THIS IS A NEW MODEM. NOW I'VE TOOK IT TO VODACOM SHOP IN WOLMARANSTAD AND THAT inDIAN MAN CALLED SABER SAID ITS THE MODEM that's faulty. I've really struggle with it since the beginning. Last time I've called in to customer care they said I must took it to a vodacom shop near to me. This is the Second time that im driving to wolmaranstad with that modem. It's already 120km and stil struggling. Can you please assist me with this? If I don't get help I'll report this to Hello Peter, cause it's since January, and the vodacom shop said vodacom online must help me cause I bought it from you online. I'VE DID EVERY THEY SAID AND STILL THERE'S NO SIGNAL. I'M GONNA STOP MY DEBIT ORDER AT THE BANK.