Disgusting customer service from Telkom

Went into store to cancel my contract to be on prepaid... been advised about the notice period, which is not the problem.. the problem is that when they switched me over to prepaid, they had cancelled my cell number and there’s been no service on my phone since, its been 3 weeks now. All they ever say is that they’ll escalate the matter to their IT department... so annoyed as all my accounts are link to that particular number, and now I’m gonna have to get a new sim card and go to all the stores including the bank to have my number changed... they quick to give you a new contract but after that, their customer service sucks!!!!