Has anyone had trouble with British Airways loyalty program?

Two years ago I joined BA Executive Club. The first time I flew BA Seattle to London to Lisbon and return and got my so-called avios quickly. Last year, I flew Aer Lingus, a partner airline and still, seven months later, have not received my avios. Even though I submitted my boarding passes, with the flight status on them, I'm being told that I need to submit proof that the flight I booked was the same as the flight I took. The BA Executive Club rep in New York was a real jerk and finally just quit answering my phone messsages and emails. After I submitted a complaint to the Better Business Bureau,I was contacted by a BA customer service rep. She said she would contact Aer Lingus but it might take six weeks for an answer. After seven weeks, I contacted her again and she told me that she had gotten no answer and would contact Aer Lingus again but it might take six weeks to get an answer. Bottom line - seven months since I took qualifying flight I still do not have my credits.