Front Suspension Stabilizer Bar problems of the 1999 Volkswagen Beetle

#1 my check engine light came on and they replaced a sensor and it did no good, it came on again, and they could not fix it, I took it back four times and they still did not get it fixed properly. # after that there was a problem with a noise in the front end and I told them about it and they said it was ok, but I took it back after my step dad told me to and they look at it and told me it was my sway bar and told me they had to order a new part but it was ok I told them I have two kids and I was worried about the safety of the car and they told me to take it was ok to drive . This it the fifth time it has been in the shop and I am worried about the safety of the car and want some one to check it over and clear it to drive so I don't have to worry about getting in to a accident with a unsafe car would you please help me to take care of this so I have a safe car to take my children in and don't have to worry about it going off the road .