Unacceptable

I moved to vodacom from MTN and they assured my they would port my number. I received pin numbers stating that my port was successful. Last week Wednesday i went to get my new phone and contract through vodacom. Since receiving my phone I can’t receive any phone calls. My voice mail says MTN but my vodacom app shows that my number is active. I have tried since friday to fix this problem to no avail. The customer care line keeps on saying they are busy and I should phone back. I feel this is unacceptable as I am paying vodacom for a service on the number that should have been sorted out.