The BP on the corner of Mineral Point and Grand Canyon was, but they went out of business earlier this year, not that helpful for you. I want to say the station on Cottage Grove Rd, not the Mobil, but the one closer to Monona Dr., might? The last one I remember going to was on University Ave in Shorewood, where Panchero's is now - ahhh memories
Back to your issue - I would try PDQs. I know the one on Packers at Johnson has signage and huge blue call buttons encouraging those who require assistance to ask and they will be glad to help. I can't imagine their other locations don't have similar setup. That one was recently remodeled though and I noticed the nice signage and giant button.