Acc Cement — Cracks in roof after 5 month

Address: 842002

Dear Sir,
i have used ACC F2R for roof construction and bought around 130 bags from your authorised distributor M/S INDIA TRADER, at muzaffarpur in Bihar.
i found cracks and even water leakage after 5 month of construction in several part of my house.i lodge a complain to india trader and he assured that company engineer will visit within 2 days.but yet after 10 days, daily follow up with INDIA TRADER, No one has turned to check why this occur.Kindly look into the matter and do the needful.After all its the credibility of company brand and company.

Thanks
subodh kumar