Paid R1000 as a penalty for leaving

I had been a client with Afrihost for some time, I was paying for a line speed of 200mbps, I only ever saw 10 to 20mbps, no one would help me figure it out, they quick to call or reply but they still couldnt help me understand why I was getting low speeds or solve my problem. When I moved houses I thought it might be better, it wasnt. This was also after they messed up my address for installation and I had to call in to figure out the problem. Unfortunately because moving didnt solve the problem I decided to try a different ISP (they have solved the problem by the way) then afrihost penalised me R1000 for leaving within the first 6 months of being a new customer. When I explained that I am not a new customer but moved houses the consultant didnt care. They billed me anyway. So now I will never go back to Afrihost and I've already told lots of people why afrihosts service is terrible and they all agree with me. One guy said the exact same thing happened to him and he wont go back either. You are going to lose a lot of business because of something so stupid, you're not thinking long term.