Hi all thanks for your replies - not sure how to answer individually on here.
Roberto, when i say 'rubbish internet' I mean that it is the norm for me to only get 1-2 megas when i am paying for 10. Also when I say 'rubbish' I refer to having no internet at all for 10 days in June when Movistar quoted 'someone has stolen the wires from Mijas Golf?'
Another big shout out of 'rubbish' would have to be when the internet and phone line went off all together three weeks ago and I was told the engineer would be here within 24 hours and arrived after 4 days.
So, all in all, pretty much BIG RUBBISH.
As for Voz Plus, which three of my neighbours use and another friend in Mijas who had similar problems with Telefonica, they fit fibre optic cables which gives a fast and reliable service.
They charge 99 euros to set it up and a monthly rate, depending on the speed you want.
So I am going to go and sign contract with them today and will cancel Telefonica when all is up and running.
Thanks for your replies everyone,
Jane