Mtn appalling customer service

MTN - CALL 135 - NO OPTION TO SPEAK TO A CONSULTANT I have tried pressing 0 after calling 135 and I get the following response "OOPS YOU HAVE SELECTED AN INVALID RESPONSE" I would like YOU to PLEASE TRY DIALLING 135 AND SELECT 0 AND THEN REPLY TO ME ! I am trying to ask why wifi calling is not working even though it's enabled on my Samsung