car service city wonderboom. worst service

I took my car to car service city wonderboom on friday the 24th of May to replace the Fanbelt tensioner pulley. On Monday the 27th I got the car back from them stating that it is all fixed. On Tuesday the 28th I took the car back because of a strange sound. Was told that it is nothing and the car is fixed. On tuesday evening the fanbelt broke on my way back from picking up my daughter. Wednesday my daughter towed the car back to them. They then told me that they did not replaace the crank pulley seal. Which they should have checked because it usually damages after a fanbelt breaks. Took till friday the 31st of May to fix. They then replaced the seal and had to put in a new fanbelt as the old one was covered in oil. Got the car back an again got a 6 month warranty. Drove 70km and again the car breaks down. Oil got into the altenator. Phoned francois the manager and was told it is not their problem any more. They did spray some carburetor cleaner into the alternator to clean out some of the oil that was messed due to the seal not being replaced. Now I need to replace the alternator at my own expense because they messed up. No contact from them as yet and in the meantime my daugher and son has to pay extra for travelling fees. my daughter has to uber which costs her R520 per day and my son uses public transport at R120 per day. Paid car service city R5300 approximitely to get my car fixed and still my car is standing and not driveable.