I feel your frustration! Twinkle is almost 8 months and she's still having accidents during the day, even though she's held it all night since about 13 weeks old
She get two long walks a day and also will sit by the front door to be let out if she needs to go during the day and will go for weeks without an accident and then.....for no reason at all one day she'll just pee on the floor! I'm hoping that with perserverance, praise and treats she'll eventually be 100% trained. Good luck to you! xxx xxx