We decided to add another agent on as we really wanted to sell. Reeds rains were just around the corner from us so seemed practical. We sold subject to contract through the other agent and they tried to poach the buyer and claimed that they had also shown them round the property. In the end I managed to speak to the buyer directly and said I could not pay 2 fees, he admitted rr had never shown him round, but were going to arrange their mortgage.
In the end that sale fell through as the mortgage was not accepted.
Rr found us another buyer very quickly but told us in writing that the buyer could comets in 4 weeks. It took 4 months. There were lots of other problems we did their job and chased everyone in the chain as did the estate agent we were buying through. Do not use them. They are not experienced and lack the care others have.