Airtel — regarding sending error of message

Address:

86b railway colony karur

I am 13 years old customer of airtel but last 3 years i am nat happy with airtel because i am always have message sending error issue with my number [protected] from last 3 years. Before the same complaint was intimated and restored after 5 days. You tell why i should continue with airtel...?
It really very bad service please don't call and disturbed because past position we are calling to rectify our issue now mr airtel you have to know the now position and rectify our issue without any delay but why i m telling to you mr airtel
Thanks mr. Airtel your time is over