What are the shops telling you that cannot be fixed? Are the subframes bent? Trying to overdo caster?
Also mention what was refreshed in suspension? And did the mechanic know how to tighten bushings and parts in ready to drive position?
click on this link to read the procedure I highlighted to align any mercedes benz, please ignore the top specs as they are for a different chassis, get the data for your own car, and then follow the procedure exactly as mentioned, do not try to jump steps, do not try to back walk the steps, they need to be done exactly otherwise you will end up spending hundreds of thousands of rupees and literal months on alignment.
the wheels should always remain dead zero toe while inspecting/setting and adjusting the camber and caster angles.
and if you are a more than normal heavy person or drive with a very heavy load all the time, the alignment needs to be done with the loads in the seat and boot,
Ive had to align some cars for customers who always complained of bad work, I came to know that the "person using the car" was not the person who was bringing it in, (person using the car was very overweight) next time I put some sandbags in the driver seat to simulate load and then added up the spring cups and aligned it, never a problem after that.