I am a self-represented plaintiff, the defendant's solicitor asked me to amend parts of the statement of claim as they were "unintelligible" and so I did. Court said I have to get his consent, although I already had it written from him. He did not provide consent, so I have asked for relief to amend and asked for costs. He is now saying he never received the amended complaint. Civil registry told me until it has seal of court, I cannot serve it on him and must get his consent or court's permission first. My question is, why is he saying he did not have an amended complaint and that is why he did not provide consent? Surely, I don't need the other side's approval first, that is why they put in a defence, right?