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Hi, even if your Agent has accepted an offer (which he shouldn't have done whatsoever), nothing is legally binding between you and the Buyer until your Solicitor has exchanged Contracts.
So, I suggest you inform your Agent and Solicitor (if you have appointed one) that you are not happy to proceed and that will be the end of the matter.
I hope this assists. If so, please would you rate my answer in the top right hand corner of your screen. Thanks Al