I spilt some tea on the table next to my phone and some went into the base unit now sound not good and saying answer mc full - have tried to clear but not working, can anyone help please!
Any type of liquid damage would be more expensive to fix than to replace, the bt shop at shop.bt.com sells them from £29.99 as a cordless phone with answering machine, supermarkets also sell them very cheaply.
Welcome to this user forum.
All you do is to unplug it from the mains, and the phone line, and put is somewhere warm, like an airing cupboard, and let it dry out for a couple of days, then try it again.
Do not leave it connected up if its wet inside, as it will cause electrolytic corrosion which will ruin it.
If that fails, then you have no option but to replace it.