Vodacom bad signal and no service

On 28 February I logged a signal problem with vodacom. Recieved a reference number and was told to expect a phone call within 48 hours. Monday the 2nd march I received a message saying thank you for your patience, we are attending to the problem, an hour later I recieved a message stating , problem has been resolved and closed. Still had no signal, called again on tuesday and spoke to a line manager who promises to resolve issue and give me a new reference number which he never did. So I called again on wednesday and spoke another line manager who only then logged the issue and gave me a new reference number also promising to resolve issue. It is now 16h00on friday the 6th and I am still to receive a call from her regarding my problem. So I called again and spoke to another line manager that say she can only assist me on monday. Problem logged a week ago and nothing has been done