Big stores like Costco, Chedraui, Oxxo, do not do it but the gasolineras will since most people are always in a hurry to go so the change gets thrown in the center console, I do not have info on where it is occurring more at the moment.
Even the banks do not have change, a week ago I was given all the withdrawal in 500.00 pesos notes since that is all they had, in order to get monedas you have to go when the bank opens, all the small comerciantes deposit the big notas and take the change for the day, the early bird gets the change.
navegator