Default Google voice voicemail on 4.4.2?

I've used Google voice for a while only for the voice mail benefits like visual voice mail and it has stopped working im running myrom v3 4.4.2 I've tried deleting data Cache wiping delvik ABC still voicemail ends up in my T-Mobile voice mail not sure if it matters but holding one for speed dial goes to some other voicemail mailbox not tmobile?

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