The workman arrived, carried out the cavity wall insulation however he drilled too far through the wall upstairs and as a result i have a large hole through the wall which looks very unsightly from the inside of my bedroom. The paint and plaster has fallen off the wall and it is shocking! I have called and emailed in to the mark group several times and have been either ignored or fobbed off. The latest explanation is that the manager is compassionate leave so they are behind and i have been told someone MIGHT visit to inspect the damage, but i hold out no hope as this is only a MIGHT! Disgusting really how someone is trusted to carry out work and they end up causing serious damage. The worst part of it all is i have not once even received an apology from the lady who takes the calls at the call center, from the way i was spoken to you would have thought it was me who did the damage.