Man saying "the next three women I marry are thrice divorced"

Q: A man said 'the next three women I marry are thrice divorced'.

1. If the man marries a woman, the divorce will automatically takes place, but if he marries the same woman again, does divorce take place?  

2. Is there any way around this if divorce takes place, like getting somebody else to marry on your behalf?

3. If a man says to a woman who is not his wife 'I give you one divorce'. If they get married does talaq take place?

Irregular bleeding

Q: A woman got her periods, however the flow was exceptionally light and only lasted 4 days as opposed to the usual 6 days. Also the usual symptoms that come along such as period cramps were not experienced. It has been 10 days and she has gotten her period, this time it is normal unlike the previous haidh. However should she consider this haidh or istihadah?

Husband not paying mahr

Q: It will be 1 year in May since I done my nikah. During this time my husband still has not given me my Mahr. We both live in different city's but he travels every weekend to spend some time with me. During this whole time he has not provided anything for me e.He has never bought me anything since we have been married and I have bought him endless things and also borrowed him money which I have asked back for. He still hasn't given it back. He owns his own business so he is not short of money. It really upsets me that it's going to be almost 1 year and he still hasn't given me my mahr. Please advice me on what I should do?