Poor service

Our gate motor Centurion D5 needed to be set, we contacted a contractor for Centurion Gates he said they must service the motor then will change the wiring from the house to the gate and change the wheels on the gate. He started working Saturday 5 January 2019, did not finish the job as he was waiting for stock (the wheels) he took our motor. Then we asked him continuesly when will he finish the job, he said he will be ther on Friday 11 January, we waited and waited he never pitched up or call us. Then on Saturday late he pitched up installed our serviced motor but did not have keys for the cover and still no wheels for the gate. He serviced our motor but brought it back in another cover box. They said they will not dig for the wire from the house they will just pull it through the existing pipe. They quoted us for labour to dig and for pipe to lay the wire in. He said he will refund us R300. And they will come finish the job Friday 18 January 2019. On Friday we yet again waited and waited, i phoned and they said they have to collect the spares.... after they told me on 15 January they already have the spares.They were suppose to be there the morning at about 18h00 they pitched up did half a job again and promised to be there Saturday 19 January at 9:30. That came and go at 11h15 i phoned him again and said what is going on, he said the car broke and and and, he never contacted me just left us waiting again, at about 12H40 i said they must please come on Monday 21 January as we have another appointment. He promissed again first thing monday at 11h00 i once again contacted him and asked himwhen as they did not pitched up again, he said they will be there just now had some car problems he pitched up 11h50. He ows us money and must finish the job, for the amount we paid him we could have installed a brand new motor R4500, and how do we know if that is even our motor as the cover is not ours and the new keys he gave us. The service suck and then they wear CENTURION GATES on their t-shirts, i will not advertise my company if the service is that bad. Wesley was the person we spoke and dealt with