Teespring review: Failure to deliver promised purchase after 7 weeks

I purchased a teeshirt on line 7 weeks ago (order # 926fb61c27f3c3d0). I was informed that it was shipped 6 weeks ago but hasn't arrived. The tracking provided seemed to indicate that it was being shipped from abroad & was in transit to this country. I have made several inquires to the company only to receive form email replies putting me off. I have requested a personal reply but have received no response. I am at a point where I will either get an answer to my inquiry more than just wait some more or I will inquire with my credit card company whether the charge can be negated.