Mine is the same way,meaning I can't call DR cell phones.
I MUST have that, after a $600 US dollar phone bill 15 years ago!
The itemized bill was about 20 pages long!
If you want to call a "Cell", or the USA, get a "Claro" phone card, enter the code, and start talking.
They only charge that card for the minutes you talk.
The extra minutes, if any, are still available next time you enter the code, on any phone.
CCCCCCCCCCCC