Trai — tata indicom blocked my [protected] number without informing me once

Sir, my father phone number is [protected]. This number's outgoing services has been shut since 24 oct 2017. On contacting customer care services it is said that the number is used in telemarketing. But the fact is this number is a personal number owed by my father and which he use in his cement trading buisness. You can check the phone details too. This number is his 10 yrs or more than that older number using since then. On visiting there store they told us that it is blocked by trai. Plz help us in this matter.