Sick to my stomach with their business ethics and overcharging

I want to give this ZERO stars, MINUS 40 actually. These people are ******* and will rob you. Advertised as R295 callout, they came to open a safe, I asked for a ballpark figure which the lady said "it is all explained in the message". In the message it states the cost will be determined by time spent opening the safe, parts used, etc. I sent a photo of the safe and still didnt get any indication of a ballpark figure. They came and it was less than an hour spent opening the safe. I was informed they dont have the lock and will have to come back the next day to replace it. After the work was done I was told by the "technician" he has to wait for proof of payment first before he can leave. I received the invoice for R15000, YES FIFTEEN THOUSAND RAND. I asked him is this correct, and he said it is, I told them it is unacceptable and this is EXACTLY why I asked beforehand. I expected a MAXIMUM of R3000. But 15000 is an absolute *******. The final amount was 2000 discount, so R13000. I will definitely be seeing how I can go about taking this further, as I did ask beforehand and they would not give any figures or ballpark numbers on what it would cost. I sent a photo of the safe and they KNEW what safe they would be opening which they charge R10000 for (well apparently), 10k, yes, ten thousand rand. I will never recommend these people to anyone as they are dishonest and try to make a quick buck. I am also sure all the apparent "good reviews" are reviews done by themselves to make it look okay. Very very bad business people who ***** your money. I think they make their own prices up depending on the person they are "helping". Their website is also only 1 page trying to look professional, but everything just leads back to one page. You also talk to one person on WhatsApp, and she makes out as if it is a huge company, but in actual fact I think it is 2 or 3 people just trying to rob people. People who have zero qualifications, they just know how to use a drill.