Slow connection

I have struggled now so long with connection. Rain is congested and do not look at the customers they have. I even asked to test a 5g device to see if there would be magic but a consultant hat something else to say. I see that I can convert to other 4g plans what If I want to discontinue? the signal is good but connection is bad I do not even have a 1mbps line. this treatment is a slap in the face, for rain was never this bad.