Yeah, they lie as easily as breathing.
When we bought our current house, the first EA (A) we contacted told us a tissue of lies involving asking price offers from cash buyers, and then said the vendor wasn't doing any more viewings. They strung us along for a whole day with this shit. We almost gave up but we'd done a drive by over the weekend and fallen in love with the place and we had horrible neighbours so were desperate to move.
DH saw that the house was also on Rightmove with another EA (B) . He called them and within the hour we had a viewing that evening. We offered asking price off that viewing.
We learned that there were two offers on the table though EA A but neither of them asking or cash and one of them wasn't even under offer themselves.
While we were waiting for our offer to be accepted I realised what had gone on. EA A's instruction period had just ended when we called. They couldn't show us the house. But instead of being honest they tried to make us go away to increase the chances of one of the two existing offers, through them, being accepted.
So we told the vendor what they'd done. And, as I hoped, she was furious and said no way were they getting her money. So the house was ours. The other two buyers were effectively locked out. ☺️
We've lived here for nearly 20 years now. EA A is still going strong. Many times I've been tempted to go in there and thank them for sealing the deal with their lies. Never had the guts though. 😁