Complaining about serious cracks in the house 123 15.

What you want to ask is "Can you call 123 15 to complain about the serious cracks in the house"?

Calling 123 15 may not achieve the expected effect.

You should go to the property first. If the property can't solve this problem, the developer can also help you deal with it. If it is still within the corresponding warranty period, that is, within five years, the warranty period expires and the property has a public maintenance fund. If these can't be solved, you can complain, but you should complain to the housing construction department or the corresponding competent department. Finally, you can collect evidence of cracks in the house and go directly to the court to sue the developer and demand compensation from the developer.