Excitel — Fibre network

Got fibernet installed in the first week of this year. Paid for ac router, but was installed with a non ac router in the beginning. After about ten complaints, the local service people installed a standby ac router in march. Problem persisted of regular network breaks sometimes for days together but no one attended.
Now it’s june and still my original router is not yet installed. No internet since many days. My subscription is totally wasted in the last five months. The local service people are giving excuses since long. This is the worst internet service provider i have encountered in my life.