Non existent post sale service...

Can somebody please urgently provide me with a contact number or some sort of contact details... I need my fibre to be installed today after a wait of almost 2 months... Each time openserve comes to install there is always an issue. If this issue is not resolved and the installation is not complete today I will most definitely taking this further because It can't be possible that it takes almost 2 months for wifi to be installed and connected.

Urgent feedback regarding a contact number will be much appreciated. TIA