Blue came to fix an issue, left my house with 3 more!

I have an older system that came with the house when i moved in. Blue came, installed extra sensors and magnets and made the system work. After 2 years, the armed status light stopped working and i had blue come out to change it. Firstly, they charged R400 for the call out just to come and see if the light works. They didnt install a new one yet. They tested the voltage, it was on about 8 volts. The next day bradley phones and lies to me saying they need to fix something else because the voltage is 4 volts. Like im that stupid. A week later blue came with the light and it was the wrong colour. A few days later they came with the right light. Whilst installing the new light, the technician (appy) broke the keypad! I dont know why he had to open it, but he broke the clips that keep it secure. It kept falling off, i got tired of it and last week Sunday they sent out another highly trained technician with some glue to fix it. He glued the keypad closed, and said that he will have a look at the office for an extra keypad. The next week i got a quote for over R1100 to install a new keypad! After blue broke it! They want to charge me for something they broke! ***! So today, a week after the engineer with the glue stuck it to the wall, the keypad starts acting up and blue has phoned me 4 times this morning. Its beeping, flashing lights, irritating me. Tired of blues bad service now.