emails disappearing. internet constantly disconnects

i am so disgruntled and may opt to go with another provider, after likely 20 years with comcast. today i called, went through the prompts twice and was hung up on  both times. i later tried to do the assistant and just got caught in a painful loop. sick to death of it. here are the two things. my emails keep disappearing. i open them up and bam they are gone.   also, my internet connection is constantly dropping. every day.