NAL

Depending on how they paid have them file a chargeback asap, with their bank, or put a stop on any money order, or check they issued. Have them gather up all the records showing they are making a good faith effort to pay the rent. You need to figure out what happened to your original security deposit as well. You need to demand communication in writing only, from this point foward and backup all communications with the leasing company, in the same spot as the records showing payment was made.

In ohio they only have to file a 3 day notice to quit, for reasons like failure to pay rent, but they do have to file it and serve the tenant correctly or the eviction suit will be tossed. If this occurs one or all of the listed tenants on the lease needs to appear at all of the court dates, submit a answer with the court, and file all the records as exhibits showing good faith effort to pay the rent.