A client came back early but said that he would still pay me for the other walks scheduled. Will this effect anything?

So I was walking a client's dog from Friday-Sunday but the client came back early unexpectedly without telling me on Saturday night, but he said that he would still be willing to pay me for the last two walks that I was going to do on Sunday. Do I cancel the other two walks? Or if I don't, will that affect anything relating to my profile? Will I get paid for those walks if I didn't do them?