MTN Supersonic bad service

MTN Supersonic FLTE is one of the worst products around. I don't understand how they can fix your service to a location claiming that it works better and faster when it clearly does not. I use this service for work from home purpose and I am plagued with bad call quality, slow internet and slow systems. I work in a call centre and have nothing but problems. When doing a speed test my connection speed is sometimes below 1 mbps. I have no other choice but to cancel this service as soon as possible.