Loans nightmare advice please

Hi all thanks for looking in, it seems our son has got himself into a right mess financially using companies like Satsuma, wageday advance, pounds to pocket and payday, which only came to light beacause we noticed a change in him, upserge in his alcohol and noticing him getting a lot of letters, after talking to him about it and him denying any problem but becoming more withdrawn and snappy we found some letters in his room during a clean out demanding money, threatening court action and the likes which we challenged him on which resulted in him breaking down in front of us, it seems he has for a while been taking out loans he couldnt pay back, our first reaction being we have to sort this for his future well being, fortunately he has recently gained a good pay rise and has contacted them and agreed terms and is paying around £220 a week back. Today he recieved another one, not a new one but from the same period and i was "FUMING", not with him but HOW IN GODS NAME has he been able to keep getting these loans surely these companied have a duty of care and a degree of responsibilty i also find it strange they all threaten court action but never have done just offering discounts if he pays now !!!!!, what would happen if we just said fine take it to court, our son has spoke of his shame and the fact he didnt know where to turn and his desire to just get away which obviosly breaks our hearts to think how far this could have got had we just left it.