Most likely your DSL connection is getting dropped and out of sync. You need to contact Claro and they need to run tests on your line (physically). You can also log into your modem and check if you see any CRC and FEC errors (especially CRC), number of drops since last power-off, and attainable vs sync rate. Also make sure you use DSL filter if you use phone as well, and that all phones being used are connected to a filter, as well as DSL modem. It would not hurt to change the hone cable from the phone jack to the modem as well.
Most DSL drops are caused partly by obsolete cabling and partly by the power company and the obsolete power infrastructure, which causes electromagnetic interference with aerial phone cabling. You wouldn't believe how much interference and noise a bad street electric transformer can cause, or issues with high tension power lines, etc. Another cause is frequently the very Dominicans causing issues by e.g. connecting their electric wires to a messenger wire on phone cable and using it as a ground (yes this does happen).
If you are experiencing frequent DSL drops (over 3-4 per day), phone company might
1) change your port on DSLAM
2) change your (twisted) pair or location in the terminal on the utility pole
3) replace a part of aerial cabling (if many customers are affected)
4) reconstruct your phone jack, both outside drop point and inside jack
If this still does not help, you can
1) reduce your internet speed, the lower the speed the less it is influenced by interference
2) get on your own an expensive DSL modem that has certain nose/interference cancellation/reduction capabilities (usually cost over $200).
Yeah I know all of that because .... of my many years fighting the DSL quality issues in the DR. Thanks god I now have fiber.
P.S. It would not hurt if you tried t find out who is the Internet tech supervisor in your area and then trying to get to know him. That way, your Internet issues might get attended to faster, or even resolved completely (while not all of the issues have 100% solution, 90% of issues have solution which can reduce your head aches by 90% and get you passable level of DSL service instead of a ****ty one). So start doing your homework and start getting to know local Internet tech supervisor.