Seeking contact at SMC Oil in Midland, TX

Hi, all -

My sister and I recently inherited land and mineral rights in Ward County, Texas. We have been attempting to update our ownership information with SMC Oil in Midland, but keep getting stonewalled by the person answering the phone. Over a 2 months period and several communications, there has been no apparent progress in updating our ownership info.

Does anyone have a contact at SMC Oil, who might be willing to assist?

Thanks.