Poorest internet connection I ever had

There are times when the upload and download speed is good, then suddenly it drops to very bad or not at all so that you cannot even get a reading. It is impossible to conduct business in this fashion. This revue is being done using my telephone hotspot which is better than their service. What is worse they made us sign a 2 year contract and charge R770.00 per month. There is another year to go. We would like to get rid of their service but they are keeping us to the contract. Nicholas H