Vodacom dissappointing customer service!

Our 4 mobile and 1 LTE business lines were due for upgrade i called through in December and was offered a deal on email i responded in January received automated response that the consultant was moved to another department and i should contact sales. I contacted sales and the lady i spoke to said that deal was impossible although i sent the proof of the deal offered on email, so i asked what should we do so she transferred me to Retentions where a gentleman i spoke to advised me to send a letter of cancellation for all our lines and in the meantime i must check what deals are available from other network operators and once the letter is received someone from their department will contact us to negotiate a deal. I sent the cancellation letter received acknowledgment and within two days received confirmation of cancellation for end of February. Nobody contacted us by about the 20th February I contacted sales and the consultant i spoke to was able to offer the same deal i was initially offered in December but said she first needs to send emails to delete the cancellation. I received email confirmation from VB Cancellations that the cancellation was deleted. Last week on the 1st of March our LTE line was down when i called to enquire was told that it was deleted and i was put through to Technical who said they cannot do anything but will send an email to VB Cancellations to enquire and i should contact Sales and our LTE account manager. I called the account manager who said theres nothing she could do but will send an email to VB Cancellations as well. The only response i got from VB Cancellations was that it was deleted so i responded with proof of email showing that the cancellation was deleted. I also contacted Vodacom Shop Baywest who went out of their way to assist but whole week no response from anyone to re instate our LTE line. Really disappointing service from a multinational company as our actions were executed from their instructions.