We have our internet from Smart, but like I said before Peter it can be pitifully slow sometimes. I can't use skype to talk to my wife as it is so slow, but can use WeChat (strange) I said before that watching things like Youtube or BBC was difficult with the exact reasons that it is always buffering, even using a VPN or using the less loaded youtube option. It is sadly what it is and there is not much you can do about it.
If you are in some areas that have a cable connection I think it get better, but I think mostly for bigger towns, I know where we are it is restricted to the lucky few.

I don't know any better ways right now, and when you go to the shops to sort it out, you might as well be talking to a door. I generally get a bit heated and demand to speak to the manager directly, being a foreigner can work in our favour sometimes as they don't like you getting loud and laying it on the line of how unprofessional their company is lol try this method, it works at least 40% of the time before the wife steps in