Angry customer

On the 6th of October 2021 around 8am of time, I took my vehicle at this workshop for replacement of outer civic joints and rear shockers, of which I was given a quotation of R3500 for fitting and parts. They promised that this will take them max 3hours of which I agree... Unfortunately they couldn't deliver their promise of 3hours because of one part which is civic joint of Ford Fiesta 06 model they couldn't get it anywhere. Then they advised that the car will have to spend a night by them and I was OK with that since they said it was already striped. I told the guy that I was talking to over the phone that I have my belongings (cloths) on my trunk of which he promised that they are safe with them I should not be worried. The following day they started by increasing my quote from R3.5k to R4100, their explanation was that they couldn't find the civic joint that fit my car and they had to buy any and reconstruct. I had to pay that money even though it couldnt make sense to me and that owner was shouting and refusing to give clarity of what might have happened..the was a lot of dodgey staff they promise that the car will done by 2pm of the 7th at 2 they said the is another car that is blocking mine and it will be done at 16:30. At 17:00 I had an exam so I forced them to make a way and I was coming anyway. I got there 16:00pm pay R4100 owner or Manager not in mood of telling nothing about the cost increase only shouting at me, have also a vedio.. The is something that they didn't do right in my right side Tyre didn't wanna go back there but on the 10th I took my clothes that were on my trank and I have notice that 1 brand Jean Jean was missing. I have checked just took a glance at my trank that day just to see the bag was there and I have noticed that it was never the same way as I left it but since I was rushing for the exam I let it go... I phone the place several time to report the matter. But the manager or owner she is refusing with the camera footage... Plz guys help if u can their contact number is 021 591 5422