How to take back control over my career?

For background, I have a Bachelor Degree in Commerce and Languages (English, Spanish and French) and I did follow 2 year Master in the same field.

I am 28 and ever since I left school, I still don't have no stable job and all the offers I get are always in customer service. I mean... I do have a diploma and It's true that I started working in customer service but I don't seem to get why this is the only work I keep getting offered. I would like to do something else with my life, something more fulfilling and after maybe 5 years of doing this work multiple times... I am tired of it. I'd like to get a better paying job and maybe something more stable for the next few years.

Actually I am working for a big enterprise but since my contract is coming to term, they wanted to make me a job offer. I was happy but then, I hear it's on customer service despite working for the last few months in Commerce.

Should I send resumes to different jobs? How can I shift my career to something more productive? I've been thinking of going back to school to change fields or maybe expand my resume but I am getting desperate.
Thanks for any help :)
How to take back control over my career?
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