I can relate to so many posting in this thread afraid that they won't receive their money. My best piece of advice is the following: 24change will make it right one way or another.
Their support staff is quite slow, but so is any major exchange since the threat of fraud to their business is such a real factor. They also have to ensure that the actions they make are recorded, verifiable, and supported by management. I also have to think that the language barrier between English speaking folk and their support staff may add a minor delay.
Do not stress about your order from them; it will only make the time you devote to such a purpose wasteful. After 17 days, they issued a new payment to me that remains in good standing. It was issued on the 3rd. I feel confident that all concerns people have are eventually handled in a professional manner from this exchange. If you have not received a response in some time, be persistent but do not try to threaten those who are trying to help you and remain courteous at all times.