data speed

On the 2nd of this month i bought a 1,10 gig of data valued at R90 the R89.00 is for two weeks and a 10mb daily data for the duration of this day, my first download went successful ,when i check my data balance it was at 786 mb at this time from around 18:30 i got a speed of between 0-44 kb/s ,then it gradually shut to zero leaving my download to be unsuccessful, i reconnected my connection and got the same respond, now at 23:05 till 23:34 its doing the same and the bad thing about it it downloads at max 4 kb/s and 0.00 kb/s for just about the entire session so im loosing my data and loosing my download continueosly .....i called the call center service champion to query this slow activity but when he put me thru to technical dept the call was dropped for several times leaving me a very unsatisfied customer, called again and launched a complaint about that as well and got no feedback or follow up on both my queries, i hope i didnt made a mistake loading these bundle,now everything seems to be doomed in freakin low speeds and non conforming results in downloading, even this message dont want to go through due to this speed of only 4.00kb/s....plz help