Airtel — Working sim but unable to rech2

I'm using my airtel no [protected] from last 1 years now also its working but unable to recharge it as airtel show we don't have any record of this number

Alternative no [protected]

While im3 daily getting messages of promotion & recharges from airtel itself
In Airtel Thanks app i can check my details

I'm receiving call/ msg everything but this faci6 will be stop in 1 days

How airtel could do this its very important number to me ive share at multiple place

Now i want my number to be working for always i don't know how