There are many TEFL organizations that offer certificates and degrees, but not all are accredited by reputable organizations. If the program you are looking into does not list its accreditation or offer you support during your job hunt after you receive your degree or certificate, it is likely not a reputable choice.
Some questions to ask during your search for a program include: Has the program been externally assessed, and if so by who? How many graduates have found teaching work abroad as a result of this program? Is the program established and respected within the TEFL field? You can usually find the answers to these questions through a search of the program's website; however, you may have to call or write to an administrator of the program to inquire further.
Reputable TEFL programs will have been accredited by one of the following organizations: Cambridge Assessment; the College of Teachers; The Open and Distance Learning Council; government accredited universities, colleges or community colleges; MEI-RELSA; the New England Association of Schools and Colleges; and Trinity College London. If your program does not cite one of these types of organizations as its external assessor, then it is likely not reputable or internationally respected.