Wave Infratech — Did not receive builder buyer agreement it is been 15 months

I have invested in wave city in last year august.It is been good 15 months i did not get builder buyer agreement.where as my friends got buyer agreement in maximum three months. it is a pathetic experience.since February they are saying next months.Why this long delay...i got apology email from wave infra tech CUSTOMER CARE NO IS SWITCHED OFF try get in touch with through email five times.No response it seems biggest mistake of my life investing in wave infra tech.