Vision SmartLink — internet not working since last month

Address:

04, Indraprastha Corporate, Opp. Shell Patrol Pump, 100 Feet Anand Nagar Rd, Prahlad Nagar, Ahmedabad, Gujarat 380015, Ahmedabad, Gujarat, 380015

I have log couple of complains to them since last month but they are not responding to me. Last they told me you need pay 1000 rs for cable change because it is causing issues which is never mention in any contract. I agree to pay them because they are not refunding my amount.
Still they replay as today we are trying to resolved this.

Since, last one month i have made 100 call to customer care and they are replaying same answer today we will resolved this issue and never transfer call senior.