Working on a challenging site

We had converted the site at Hiranandani in Thane. We had given a quote of 2.9 lakhs. At the site, furniture work was also going on. The furniture guys also gave a similar quote for painting work, but the customer went for us. Because of the branding of Asian Paints.  

But when we used to finish our work and leave, in the evening, someone would make a scratch on the wall surface. A lot of things like this kept happening.

We faced a lot of difficulties there because of this. We would do covering and leave, and the next day it would be soiled. Scratches would be there on PU. Finally, towards the end, we were feeling helpless and thinking what do we do to resolve this? We finished it finally, after a lot of struggle. 

A situation where approach not yet found