Airtel — satisfying service!

Address: Ahmedabad, Gujarat, 380052

I was vodafone customer but airtel offered me better plan and have promised me for better connection so i port my number from vodafone to airtel but ever since i port my connection i am just complaining about the service. They always say i will get a call from technical team but it never happened. Airtel is claiming to be the india's biggest network but i must say you are worst then any other service providers.
I want assurance of network and internet speed. If you can't offer that then i need refund and compensation for the time i wasted behind complaining.