cmrs mahavatar heights- good investment?

I am an existing customer of this builder and they are the worst in the business. They created lot of mental stress because of delay and bad quality in constructing the apartment. Moreover, they are very unprofessional towards the customers. Do not be fooled by seeing the colorful brochures and banners that they use to attract the customers. Go and speak to already existing customers of this builder in AECS layout, BEML layout, Varthur etc, You will know the pains the buyers had undergone with this builder.

Every time when we go to meet them to raise our concern, they will give a check list that it will be completed in another 2 or 3 months. This is to make the customer silent by showing the check list and promising that it will be taken care from now onwards. But it had never gone as per the plan and the progress is always very slow. They keep avoiding the customers and the concerns are not properly addressed.