2002 Chrysler Concorde loud rumbling noise w/cold start

I'm single mom and no one to ask. Already paid out $1K in repairs. I don't want to be taken advantage of and need some advice.

I took my car for a coolant leak and brakes. They replaced coolant housing? Then they put new belts on the car stating that it was time (no problems) they just said they were worn.

Now, when I start the car on a cold start, there is a rumbling noise from the front. Almost sounds like dash board area or something.

The belts are squealing. But not all the time, only sometimes parking and then sometimes going down the road. Never had problem w/belts until they were replaced. Machanic told me today they tried to tighten belts, but they really weren't loose.

and they don't hear a noise in front. But of course I took them a warm car this morning.