MTN - received devices but aren't working

I ordered 3 new cellphone contracts and 3 new rooter contract from MTN to permanently setup three employees to work from home. I received the devices within 2 weeks, however the rooters, which was the main requirement still aren't working after almost 2 weeks. We have been to multiple MTN stores and spent hours on the phone trying to correct the problem. This is extremely frustrating and I wish I hadn't ordered them at all.