Bad service

I bought a 2011 chev cruze from them. I asked for 2 manuals that was missing. They told me they will get it and let me know when they have it. I bought the car 3 months ago and everytime i call or whattsapp them they tell me they do not have it they will keep me updated. Well i have not been updated nor did i receive any manuals yet. Also when i bought the car there was a knocking sound on the front suspension the car went to them i after a couple of days they come back and said nothing was wrong. I took the car to somebody else to get it checked and they gave me a report on what they could see is faulty. I again took the car back and gave the report and the replaced the lower ball joints and shock mountings and fix the problem on the side shaft. After about a week the knocking sound is back. I am tired of fighting and everytime hearing there is no problem on the suspension. O and just another thing , after i bought the car and received it , i told them the clutch has a shudder. Also they told me after they had the car and send it to 3 different place they claim there is nothing wrong with the clutch. Now the clutch is so bad i can hardly pull away and i have to replace it because they said nothing is wrong. After a month when i still have rights to take car back for problems now they say yes the clutch is faulty. That helps **** for me because no it will be done with warranty they said. I will never buy a vehicle from gys pitzer ever again. They play for time not to help you and when the 30 days is over then its your problem. The client service is non existent and they never keep you updated on whats going on.