@Bl3izDu Oh no. :( I hope you're able to sort it out and the problem is smaller than feared. Sounds like ur not in the US so hopefully rules and stuff are more favorable. Be careful with any remediation companies, they can be so predatory.
@Bl3izDu Not sure if your locality or state does but some states makes the seller buy (sometimes buyer) a 1yr Home Warrenty for this sort of thing? Hopefully?