Total waist of time

They call me daily to upgrade my contract . When I went to there shop . I waited 90 min . During that time I got 2 calls from cell c to upgrade . Then the lady says to upgrade I must call legal department . When I call they say legal department is not working . No upgrade .comleate waist of my time . Why do you calle daily then 2 x in 1 hour . Why ? Stop your spam calls and work on service please .