Loans?, negative money

I still do not know if it is a bug or something but apparently I can buy without having money but if I have negative money if I get more it is subtracted until it reaches 0 and then it starts to add, which is added negatively here I leave the image

Have you tried refreshing the game? Occasionally the number on the screen is a lie and the server knows your real amount.

as you explain that I can buy without money, but the negative amount increases but I think I will recharge it for that matter