VERY BAD SERVICE

My 10 Gig data line contract *** ended on the 20/04/2021. I phone and cancel the contract on 23 March 2021 a month before, I never received a cancellation sms or email. On 21 April 2021 I phoned Vodacom cancellation again, the operator confirmed that I requested the cancellation but it was not done. He then lock a request to cancellations. Now on 3 May 2021 the contract is still not cancelled. I phoned customer care again just to hear still no cancellation and they will send a request again. How long is it going to take to get this contract cancelled ???? VERY BAD SERVICE to a customer how is with them since the 1990's