Deposit pd little delivery.R290k and no value

Engaged at home expo 18 mths ago for new home garden. Looked professional. Did pictorial design and concept but no plans and details before 65% deposit. Plans arrived after deposit pd-did not nearly represent actual garden dimensions and proposal for gazebos / pergolas / firepits-would not fit. When contacted director (as designer left?) he asked for an additional R80k for decking (new recommendation), thereafter tried unsuccessfully to get new plans drawn as multiple \designers"/ could not meet as no staff / directors in CT / designers attending Expos. After repeatedly phoning and following up"