Pathetic service

I am so frustrated, I have downgraded my line to a 70, 50 MB line, I don't know what happened, I can't even have a work call. Every time I do a line test or speed test it's 20 MB or less. I mean I am paying for a service and I've called in about 5 times and no one can help nor does anyone care. I've been with mweb over 3 years and I think it's about time I cancel this because I'm so annoyed and they just don't care or bother to have the speed and internet fixed.