Duped by an estate agent

I was shown a supposed bargain on which 4 other apparent interested parties placed offers to purchase. I could see that the place needed renovation. I expressed to the agent that I wanted to rent out the place and if the cost of renovation was less than R200 000 then I would still proceed with an offer. The estate agent obtained a quote from her lover's contact which of course came in at R196 000. I then started negotiating with a rental agent. They said the place was in such a poor state that it could not be rented out. I met with the agent and contractor on site and requested a new quote to adress the rental companies concern. This time the quote came in well above the pre-condition of R200 000. I requested the official approved house plans and only received illegible, incomplete WhatsApp images which did not resemble the place at all. Despite all of my efforts to block the transfer and obtain the plans, the sale went ahead with their lawayers simply steam rolling over my concerns. I now sit with an unliveable unrenteable place and considerable financial issues to resolve the matter.