4S
Seriously, there is some good advice on here, but you have to chose whether or not you want to listen to it, or accept it. It seems like you've made your mind up not to give out your mobile number so that's fine. Don't get upset about other people having a bit of banter or a bit of fun cause that's what it's all about. Read between the lines, think about what advice is good and bad and make up your own mind as to how to make you business better. Personally, I think this site is great, the advice I have taken on board is invaluable and I genuinely wish you all the best.