3rd time applying for b1/b2 from pakistan. Guide plz

[shafiq786]

Dear All members,
I am working in textile company and our customer from US invited me for training but 2 times i got refusal before 6 month i think due to unmarried and low salary 50K.
Now customer again invited me to participate in April session. Please guide me to convince officer this is last chance for me please guide me how can it will be successful.