Very sad and ashamed

I have a sad story to share regarding an MTN shop at Cape Town international Airport.

A company called Mondo which sells their services called to offer a Wi-Fi router which I but not what I thought it is then I called them back and explained they then told me to take the Wi-Fi router to any nearest MTN store which happened to be the one at Airport they book the router on their system and I got a confirmation SMS unfortunately I broke my phone with the SMS which had a track number on it. I went back to the store they told me that the consultant who helped me is on leave therefore they can't help me until he is back then finally he came back but everytime I go there he is not there but again finally yesterday I met him now the challenge is I handed over the router with everything like I have nothing to show as the sms got deleted now they say they need an IMEI number to track my router now that means I must continue paying for something I never used as they took everything including the simcard its been 3 to 4 months now if not more paying they are happy to get my money while I am not using their service because I don't have an IMEI number I will never get my Wi-Fi router back but I must continue with the contract is that a fair treatment don't think so I wish anyone who has the right or power to help me here can do that because I am still paying for it, My contact number is *** or ***