Vodacom Fibre

We were advised that we have fibre in our estate and vodacom came and start selling to us, I signed up and was advised that installation will take place in three week, I received my router in 5 days which was very impresive......fast forward to a month and half later I receive a call and get advised that they do not know when I'll get my services installed because last mile provider hasn't switched on the fibre. Why sell in an area where you know you do not have infrustructure? They then offered me a temp solution i.e LTE but capped to 100gb pm...why offer me a capped solution when I signed up for an uncapped solution?