Telemarketing phobia...should I go for it?

I am a m comm fresh graduate who currently desperately looking for job. I went to an interview recently and they hired me instantly. But, it's a telemarketing position a.k.a sales. That's what the manager called it. Actually deep down in my heart, I'm so sick of that job. Since I have 4 months experience of telemarketing during internship, I found that that kind of posting didn't suit me well. I try to escape whenever have chance, whether going to washroom or sign the courier service that they delivered to the office. Every morning when I wake up, it's a bad day for me, didn't have any enthusiasm in that job. I keep watching the clock which is front of me. My record of calls keep decrease months per months. Not to say reach any sales target. Whenever I talk to my family members my wish to reject the job offer , they keep objecting me. Especially my younger sis which is 1 year my junior. She would said I am choosy about job, it's not that difficult to make calls, it's hard for me to find a job,etc. My dad as a gov servant will retire next year, that's the reason why I so desperately looking for a job. Lately, I can't have a good sleep as I have to start work as telemarketer in July. I definitely wanted to reject the offer but my family members keep saying things to me. What my family members told me is grab whatever job that come first, at the same time find the job that I like. I try to talk to my sis, but to no avail. really frustrated...don't know what should I do.