What do you mean by having "cells removed"? Could you be meaning the antennas are being swapped out, this would require removal of the existing ones first.
If this is a greenfield tower, the antennas would be mounted to the headframe, if it's a rooftop site then they could be mounted on the outside of the building or on rooftop steelwork.
The customer point-of-contact for all network issues is either CS on 150, or the status website already posted.
