Bad service from ISP

Originally was very happy with there service. The about 8 months ago the dish looses the settings and was without service for 2 weeks. The then send a technician to rectify, The first thing that they did they bill me for that. I had to phone them to rectify the account, From that day tat the technician left the site the speed at night time when we use the internet it came down to between 1 and 2 meg/ second. I pay for a 10m/s line. To not to be hard on them I increase the speed from 8m/s to a 10m/s. I am on this low class service for the last 2 months I requested for a move to another more stable transponder but they keep on thanking me for my patience and keep on telling me to do an internet speed test - as if that will cure the problem. I will at month end return the payment and I will go to a lawyer to claim the money back that I have paid for the last 8 months because they did not full fill there part of the contract, I will contact another service supplier to furnish me with a similar service.