Swift - Loud and continuous squealing/chirping noise even after changing and tightening serpentine and drive belt

[ykon]

Hello ,
I have a 2008 Suzuki Swift 1.5 petrol with 140.000 miles

For the last few months, there was a loud squealing sound when I started the car that only lasted for a second or two.
Took the car to the garage and they said it was the belts
Changed both serpentine and drive belts but the problem is that now the sound lasts much longer (to the point that it is embarrassing driving the car because of the noise)
Went back to the garage, they tightened the belts but the sound returned after a couple of days
Now the garage says that it is probably the AC compressor

Another thing that I noticed is that lately, the steering wheel has become much heavier

Does anyone have any ideas about what the problem could be?

Thanks

[ROBBIE]

Sorry don’t have a swift, but first thing I would have done was check belts and tension then I would move onto bearings on pumps and alternator. If steering is getting heavy could ps pump