Airtel — validity related

Address:

Unnao, Uttar Pradesh

Sir i bought telenor sim few years ago with lifetime validity, few months ago telenor became airtel. After few months airtel telling me your outgoing validity end on 6 dec 2018 and forcing to reacharge to extend validity indirectely they want that reacharg with unlimited packs to getting my no. On keep be a custmer of airtel, sir this is indirectly blackmail if we are using 2 or 3 sim to keep in touch with family and network coverage than do we reacharge every sim with unlimited pack which are 149, 199, 398
No sir we can not please help us...