Had a bad suprise today at banco Progreso. I had deposited 1000 pesos one year ago and deposited 3000 today. When I got my bank book back I discovered that for 6 months they had been giving me a little bit of interest and then after 6 months they made charges of 100 and 35 every month, turning my 1000 into 353 after just under a year. Is this correct?