Rain 5G connection service delivery is bad!!!

I purchased the rain 5G router and it was delivered last week Friday. Since then I have not been able to connect to 5G, Called customer care on the Saturday was given some troubleshoot to try and do the connection from my side. I did everything step by step, moved from every room to try and get connection , nothing. Called back the Monday to advise and i get no assistance. Wednesday called back and requested a tech to come out and assist, nothing. No communication to advise that they have logged or received my request nothing!!! I have spoken to several agents all telling me that their tech (IT) people have not tended to my ticket from Saturday?????? Today again new call, more airtime wasted ..Service is rediculous!!! I did not buy this device to be connected on 4G. if I wanted 4G i would have stayed on the normal sim.