I've been getting Percutaneous Tibial Nerve Stimulation (PTNS) treatments from my urologist the last few months, kind of like acupuncture treatments in conjuction with electrical stimulation. The technique is described here:general-discussion-f1/topic17273.html#p171013
I'd been reading about this technique for a few years, but it was my last unsuccessful attempt to use prescription drugs to treat overactive bladder that led to the lucky discovery that the urologist I use was familiar with PTNS and had been using it for many months with success to help many patients. The treatments have helped me to reduce accidents, voiding problems, and reduce urgency.
You might ask around and see if you can find a urologist in your area who is trained with this technique.
BTW, I'm on medicare, and the treatments are covered.