Airtel — poor service net problem

Dear sir,

I want to tell you that my airtel net problem is not resovle by your airtel team member. I have many times contact your airtel team member and also go your service centre airtel model town.
Address: plot no 4, mch property no 39, model town, near dabra chowk,, hisar, haryana 125001

There is no response yet.

Very poor service airtel net problem in previous 6 to 8 month.
If you are not resolved my problem i'll be changed my sim other operator.