Overcharge for services - Complete Rip Off

I had terrible experience with Donnie from AAA Refrigeration and Appliance Repairs (Donnie ********** 004/ ********** 931). They were supposed to quote us to fix the door lock of our washing machine but when they got to our house they carried out the repairs without advising us of how much it would cost. They then called me and demanded an exorbitant fee for their services. I was shocked and naturally refused to pay. After heated debates. Donnie agreed to reduce the fee initially by R200, then by R400 and finally by R600. To give a client a R600 reduction goes to show how much they overcharged. I was still unhappy with the pricing so needless to say the final amount was still ridiculously high and we knew we were still being ripped off. However, I reluctantly paid them what they demanded to avoid the situation getting out of control. We will never do business with them again and I hope that they don't get an opportunity to rip off unsuspecting customers in future.