Eureka Forbes — Service Executives don't come for Service

I have requested for servicing for my aquaguard multiple times through the Whatsapp Chat bot still no one has come. One person came but didn't change my filter as he did not have it, said will bring it tomorrow, made me renew my annual contract and never came back didn't receive any calls from there on. Whatsapp chat bot says it has esclated with concerned people but still no one comes no comunication at all. there is no other way to reacht to the company other that email or Whatsapp. same responses but o action.