Airtel — sim card not active prepaid

Address:

457001

Dear Sir,
I have an airtel prepaid sin card since 2016 and since June 2018 it is not connecting to the network as I work in Saudi Arabia your customer care executives have not been of much help after mailing them many times they called me for information and now the following letter they sent me.As I connect to network I get this sign🚫 before June I was able to connect to stc network in jeddah now I get the sign🚫.Is there anyone who can address my issue as I will only be back in india on October and I don't want to loose this number also it's a life time validity so how can it just stop working after having recharge amount in the card.
Thanking you in anticipation,
Denise Nash

What seems to be the issue with my phone no-[protected] this is regards to my reference no CCNOR[protected] which said the issue would b resolved on 23 by 4pm n still no reply from you.

Regards
Denise nash