That's odd, I thought I replied to this thread yesterday.
I called them and spoke to a receptionist. I told her the situation and she said, "Did you also send an email?" in an accusatory way. I said I had. She then spouted some claptrap and tried to get me off the phone. She said the cheques were late. I told her she must not have listened to me or read my email, since I said that I just told her I did receive the cheque but it was short. She then said "that must be April's cheque". Hmmm, since it was mid-June I assumed it was May's cheque, but since I was not sure I said I'd check and call her back. I checked and I had received April's check in May, it was May's check that I received and it was short.
I called right back. She asked me if I had cashed the check. I said I had. Then she said, "YOU CASHED THE CHECK?" as though I had done something terrible. I said again, yes, I cashed my check. I think it was designed somehow to make me feel at fault. She then asked me to send a photo of the stub. I said I can just give her the check number. She said Omar, who is apparently the owner, wants a picture of the stub. Okay, I took a picture of the stub and mailed it. Within about two days I had the remainder. No one gave me any explanation, other than trying to fool me that it was for the previous month.
There's something up here. I thought it was just me. I had received a moronic, anonymous email from them last month which I protested against. I thought the short-payment was a retaliation.