Dstv signal doctor with an open order book without quote

Come to fix signal on Dstv. Through out the process I asked what the changes are and what it will cost with no replay other than the outside cable looks damaged and should be replaced.. The initial cost was R350 for callout (which should normally include 1 hour labor. This was also stated on the invoice). When they where done, they charge an extra R875 for labor which should have been covered by the call out and R250 for cable that is not even 1 meter long which should also be covered by call out. and then a charged for a new LNB, which was never said to be replaced or faulty and a bill of R3100. So from a transparency point on pricing is very unprofessional and makes the customer end up with a bill that might not be affordable. This after I asked evry step what it is going to cost extra