It is from Idealgelt, an online payday loan company. If you borrowed money from them, it is not a scam. It is just one of the many numbers they use to try to get you to answer the phone.
This is a scam the next time you receive a call from them answer it and let the phone have an open line if you can. They have to pay for the phone call. You do that several times they will quit calling for awhile. It is a scam