Tata Teleservices — Request for refund due to poor service and connection

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We have had tata telebroadband connections since past 4 months and it was not working properly since day 1. Whenever we raised a complaint they would fix the issue temporarily and it would not work most of the time. One day they had a outage for 5 hours and i nearly lost my job. I disconnected their connection despite 2 months of credit and now they wont give me the refund. I tried to contact them multiple times on their toll free number and their email but they are not at all responding.

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