Fortis Healthcare — Wrong mobile number noted during vaccination registration

Address: Fortis , Mulund , Mumbai 400080

I went for my vaccine in fortis mulund Mumbai hospital . The team took my mobile number and said they would do my cowin registration. I was then given my dose. I did not receive any sms and asked them why . They said it is an app issue and will get it later. Till I did not get the same the next day I contacted them, made them send the confirmation report they got and proved that they had registered a wrong mobile number. Despite multiple follow ups they are not giving me any solution to get the same corrected . I am unable to schedule my second dose. Pls help