§ 79
If the consumption account has not been delivered to the tenant by the deadline mentioned in § 75, the landlord loses the right to demand additional payment from the tenant.
Stk. 2.If the consumption account has not been delivered to the tenant within 2 months after the deadline mentioned in § 75, the tenant may refrain from paying advance contributions until the account has been delivered to the tenant and the tenant has received any overpaid contributions for the completed accounting period.