What should i do.Please help

[dontforget]

Hi im from India. I got a job offer from one of the singapore consultant and he applied for my EP.My EP got approved.The salary was very low.Im yet to join this job.Meanwhile i got an offer from another consultant for a decent pay. The second consultant is ready to apply for my EP provided the first consultant cancels my EP. I explained the situation to my first consultant and asked him to cancel my EP.Hes trying to avoid my calls when ever i call him and not telling me any result.

Would he cancel my EP?
Even if he dosent cancel how long will be EP be valid?
I got my EP approved on March 23rd.

What should i do?Please share your thoughts and help me out.