Medical Help for a Senior Citizen

Mom is 100 years old. We have hired a service to give her her daily medications. The pharmacy fills the cassette and the aid comes in to her apartment three times a day to give the pills to her. Unfortunately we have found errors several times where either pills were not given or pills for the wrong time of day were given.  So now we have to switch pharmacies for one that supplies blister packs which can be scanned by a computer to ensure that the proper medication is given at the proper time. What a hassle!