Hathway / Gujarat Telelink [GTPL] — bad service and worst service i have get by this company

Sales man visits to my home and take advance money and told me that you will get connection after 1week because of this work load engineer are too busy and we don't have assets i agree with him i didn't get my connection till 15 days then engineer install router at home and tell me that connection will start in night. Its been 2 days but there is no any response of them and sales man not answering my calls