The last time I was in Punta Cana, I purchased an Orange Cell phone. I believe the money on the phone will expire soon. Can one of my friends down there just add money to my cell number to keep the SIM card active? I think this can be done at a local store (ie. pharmacy....I just gave them my cell number and my money when I bought time....no scratch cards). I will be returning in one month's time and I don't want a new number and I don't want to buy a new SIM card.