unprofessional service

tata indicom is giving very unprofessional service.I booked a connection on 7th July.Cheque of Rs 1513/= was collected by co.
within 2 days.Because of non-availaibility of connection,i cancelled my request and asked for refund on 15th September.But
till today they have not refunded the amount . I have wasted so many telephone calls and time on them.Is anyone from
TataIndicon listening??? Isn't this height of unprofessionalism. Why should customers not approach Consumer Courts