They only care about the commission not customers

Customer care is foreign language. We have recently bought new and sold our old property in Richards Bay through Seeff and experience the worst service ever from both the sales agent and her manager. The selling side of things went smooth "they had to get their commission". But the buying side of things made me wish we had chosen any other company but Seeff. Once the properties were finally registered the issues began, they both registered on the same day, our old flat to the new owner and our new house to us. The problem began when we asked for the keys from the sales agent, my husband gave her a call asking for keys and she said she will get back to him only to be called back by a lawyer that was handling the transfers for the house to plead with us to let the previous owners stay until month end. Mind you the house got registered on th 21th of may 2021. We told the lawyer that we are ready to move due to the new owner wanting us to pay rent from the same day the flat was registered to her name. But she begged and we ended up agreeing on condition that they also pay rent in other for us to pay the new owner. We had a verbal agreement. From the 21th till the 29th we are paying rent and forwards the end of this term we are told the previous owners dont have money to pay us for rent, confusion took over entirely I mean we had to rent in order for them to occupy our new home? I mean this people even refused for us to come for curtains measurements for more than 6 week prior to registration now we had to rent and leave from boxes since we were all packed up and ready to move. The sales agent promised us that she will see to it that we get our rent money that is due to us even if she has to pay it herself but after we have moved she made it a point never to respond to our messages and emails anymore together with the lawyer that was pleading with us to let previous owners stay until they were ready to move, AT OUR EXPENSE.