Unisyn Enterprises — Abut Refund issue

I booked Tata sky connection as on 04/03/22 Rs 2737.. But I requested to cancel because tata sky technician said it was not possible to install connection due to some technical reasons and told us to request for cancellation.. Regarding I applied cancellation request as on 07/03/2022 through the lady who registered our complaint. but till I not got refund.. Regarding I contacted Tata sky customer care but told to contact your dealer.. I contact to city contact no. but they not given positive response. Please help us..