Meltdown 2015

I feel like I'm about to explode in a sea of tears that won't stop. I've had a very stressful day at work, some guy called saying nobody would help him in grocery . So I paged for someone to go help him . They never went to help him , so he calls back cursing , I didn't know what to do cause management was nowhere to be found as usual ,so I transferred it to customer service, he then told the customer service manager off and complained that I hung up on him ,nobody has the right to curse u out .and I won't listen to that . Then 1 hr later he calls back and says he wants to talk to a certain manager who has gone home ,so I got him another manager to talk to he hung up on them ,calls back and is cursing again demanding I not put him on hold but tale the phone which is not a cell phone with me and find the manager for him to talk to . I put him back on hold and told management what was going on of course they didn't even acknowledge me with a response .all this over a ham I hope he chokes on it and has a heart attack !  , so here I am nearly in tears at work ,to make matters worse answering the phone isn't even my job and I'm being used to do the job of 5 people cause they refuse to hire anyone else . I'm feeling very overwhelmed and at my emotional breaking point ,my husband keeps bringing up the fact that I can't drive and how he hates driving me to and from work ,this makes me hate myself and feel worthless ,and I've tried driving is really hard for me because I'm so nervous about it and here I am almost 32 and can't go anywhere alone cause I can't drive , f***! Y am I such a misfit in this world !?