Mtn-poor customer service, product not received

Had taken a MTN contract during black Friday (end of November 2020). 100gb a month plus a modem with free delivery. I had received the data but I haven't received the modem since I took the contract. Its been 6 months now and still no sign of the modem. I have emailed mtn countless of times as well as phoned. Its been back and forth with them but with no avail.