DISAPPOINTED WITH MY PHONE

I changed my telephone provider last Dec 29 because my previous phone provider is getting more expensive. So I decided to change to other company which they said that it's cheaper and the coverage is good. I grabed it becuase of the unlimited international text and there's no cotract which means I can easily quit from them anytime I want. Everything goes fine with my phone. I texted my family and friends in Philippines and they recieved all my text but they replied in my roaming number. Now, the problem is my two sisters send me sms to my new phone and I didn't received any one of the text. I thought there was a problem with my phone so I went back to the store and told them what happen. They called the costumer service and I called as well. They told me that there is no problem in my phone. The problem is probably the telephone company in Philippines and in Saudi Arabia. Oh my! I can't believed it. Don't tell me that all the country all over the world has the same problem? I texted my friends in other country and same thing happen. I didn't received any text messages from them. I'm so fade up and I decided to cut my account and go back to my previous provider and pay more. It's better than paying cheap with a cheap service.