For Marriage
They are not at your level (Shan). It is better not to keep yourself waiting for no reason.
For Business / Deal
It is not worth the trouble and problems; moreover, they are deceiving you and you will suffer a significant loss.
وَلَوْ أَنَّ أَهْلَ الْقُرَىٰ آمَنُوا وَاتَّقَوْا لَفَتَحْنَا عَلَيْهِم بَرَكَاتٍ مِّنَ السَّمَاءِ وَالْأَرْضِ وَلَٰكِن كَذَّبُوا فَأَخَذْنَاهُم بِمَا كَانُوا يَكْسِبُونَ
Walaw anna ahla alqura amanoo waittaqaw lafatahna AAalayhim barakatin mina alssamai waalardi walakin kaththaboo faakhathnahum bima kanoo yaksiboona
If the people of the towns had but believed and feared Allah, We should indeed have opened out to them (All kinds of) blessings from heaven and earth; but they rejected (the truth), and We brought them to book for their misdeeds.