MTN FLTE bad service.

So MTN Supersonic FLTE uncapped service drops to 0.15 mbps at times. It happens any time and all the time. I use this service for work from home purpose. Why is this happening!!!????. I pay for the service and understand that there is a Fair use policy, but this is ridiculous. I think I might just cancel this service and use Fiber, strictly. MMMMMM.