High speed internet

There is internet in our apartment building in Zihuatanejo, but it isn't high enough speed for streaming live TV. Too much buffering and then the signal goes. Is my best solution to have a higher speed service installed? If so what should I expect in installation fees and monthly service fees. We only need it 3 months of the year, would we need to pay for it year round. American TV is very important to my husband.

Telmex...infinitum