Tenant not paying rent in Chester PA

[Syeda Naseem]

Rented my first rental property recently and now tenant is not paying rent. Did not pay Sept rent's and Oct's rent is over due now. She moved into the house in Aug and paid first month's rent. The house had issues and we gradually fixed them. A couple of issues remain, which includes rodent problem, which is a block wide issue. We stayed quiet in Sept because we realized that we need to address tenant's complaints however now they think that they do not need to pay us until we address everything. We spent more $3k on the house without getting a single penny and it is breaking my back. What are my options? Thank.