Tech Mahindra — Selected for the job but not get call from company

Hi there, my name is nadiyapara raj. I am from rajkot gujarat. I had applied for the chat support toll from naukri.com job portal. 13july, 2022 I had given my typing test and grammar test, I passed both. after one day at 15july, 2022 i had cleared my mock chat round and client round. at the day I had got message from our HR is I am selected and I will get call for joining. but now it's been ten days, I am waiting for the joining call. but not yet any call and HR is also not replying any message. they had not given any update. i want a solution of this problem. my HR name is svetalana madam and here is the number of HR [protected]. the another HR who suppose to call us is joyanta sir, contact number [protected]. he is also not reply any call or message.